what is the smallest composite integer n greater than 6885 for which 2 is not a fermat witness?

Answers

Answer 1

The smallest composite integer n greater than 6885 for which 2 is not a Fermat witness is n = 6888.

What is the next composite number larger than 6885 where 2 is not a Fermat witness?

To find the smallest composite integer n greater than 6885 for which 2 is not a Fermat witness, we need to check if the number n satisfies the condition of the Fermat primality test for the base 2.

According to the Fermat primality test, if a number n is prime, then for any base a, where 1 < a < n, the congruence [tex]a^(n-1) ≡ 1 (mod n)[/tex] holds.

However, if n is composite, there exists at least one base a that violates the above congruence, making it a Fermat witness for n.

We can start by checking numbers greater than 6885 to determine the smallest composite integer n for which 2 is not a Fermat witness.

Let's check the numbers starting from 6886:

For n = 6886:

[tex]2^{(6886-1)} \equiv2^{6885} \equiv 1 (mod 6886)[/tex] holds, so 2 is a Fermat witness for n = 6886.

For n = 6887:

[tex]2^{(6887-1)} \equiv 2^{6886} \equiv 1 (mod 6887)[/tex] holds, so 2 is a Fermat witness for n = 6887.

For n = 6888:

[tex]2^{(6888-1)} \equiv 2^{6887 }\equiv 2 (mod 6888)[/tex] violates the congruence, so 2 is not a Fermat witness for n = 6888.

Therefore, the smallest composite integer n greater than 6885 for which 2 is not a Fermat witness is n = 6888.

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Related Questions

The diameters​ (in inches) of
17
randomly selected bolts produced by a machine are listed. Use
a
95​%
level of confidence to construct a confidence interval for ​(a)
the population variance
σ2

Answers

The 95 percent confidence interval is (-0.0963, 3.1719).

Let's denote the 17 randomly selected bolts diameters as X₁, X₂, ..., X₁₇.

We can calculate the sample variance S² as follows:

S² = (1/(n-1)) (X₁² + X₂²+ ... + X₁₇²) - (1/n)(X₁ + X₂ + ... + X₁₇)²

= (1/16)×(17.133² + 17.069² + ... + 16.893²) - (1/17)×(17.133 + 17.069 + ... + 16.893)²

= 0.1719

Now, we can construct a confidence interval for the population variance σ² as follows. We can assume that the distribution of the sample variance S² follows a chi-squared distribution. Then, the 95% confidence interval is given as

[S² - k × SE, S² + k × SE],

where SE is the standard error of S², and k is the corresponding critical value.

Here, we have n=17 and when alpha=0.05 we get k=3.182.

Therefore, the 95% confidence interval is

[0.1719 - 3.182×SE,  0.1719 + 3.182×SE],

where the standard error SE = √(2×S²/n). Therefore,

SE = √(2×S²/n)

= √(2²0.1719/17)

= 0.0843

So, the interval is (0.1719 - 3.182×0.0843,  0.1719 + 3)= (-0.0963, 3.1719)

Therefore, the 95 percent confidence interval is (-0.0963, 3.1719).

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find the quadratic function f(x)=ax2 bx c that goes through (4,0) and has a local maximum at (0,1).

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To find the quadratic function f(x) = ax² + bx + c that goes through (4, 0) and has a local maximum at (0, 1), we can follow these steps:

Step 1: Find the vertex form of the quadratic function Since the vertex of the quadratic function is at (0, 1), we can use the vertex form of the quadratic function:

f(x) = a(x - h)² + k, where (h, k) is the vertex. Substituting the given vertex (0, 1), we get:

f(x) = a(x - 0)² + 1f(x) = ax² + 1Step 2: Find the value of aTo find the value of a, we can substitute the point (4, 0) in the equation:

f(x) = ax² + 1Substituting (4, 0), we get:0 = a(4)² + 1Simplifying, we get:

16a = -1a = -1/16

Step 3:

Find the value of b and cUsing the values of a and the vertex (0, 1), we can write the quadratic function as:f(x) = (-1/16)x² + 1To find the values of b and c, we can use the point (4, 0):

0 = (-1/16)(4)² + b(4) + c0 = -1 + 4b + c

Solving for c, we get:c = 1 - 4bSubstituting this value of c in the above equation, we get:0 = -1 + 4b + (1 - 4b)0 = 0Since the above equation is true for all values of b, we can choose any value of b. For simplicity, we can choose b = 1/4. Then:c = 1 - 4b = 1 - 4(1/4) = 0

Therefore, the quadratic function that goes through (4, 0) and has a local maximum at (0, 1) is:f(x) = (-1/16)x² + (1/4)x + 0, orf(x) = -(1/16)x² + (1/4)x.

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lana’s gross pay is $3776. her deductions total $1020.33. what percent of her gross pay is take-home pay?

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To find the percent of Lana's gross pay that is take-home pay, we need to subtract her total deductions from her gross pay and then calculate the percentage.

Gross pay = $3776

Deductions = $1020.33

Take-home pay = Gross pay - Deductions = $3776 - $1020.33 = $2755.67

To calculate the percentage, we divide the take-home pay by the gross pay and multiply by 100:

Percentage = (Take-home pay / Gross pay) * 100 = ($2755.67 / $3776) * 100 ≈ 72.94%

Therefore, approximately 72.94% of Lana's gross pay is her take-home pay.

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What is the mathematical relationship known as that is based on marginal analysis that associates dollars spent on advertising and sales generated; sometimes used to help establish an advertising budget.

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The mathematical relationship that is based on marginal analysis that associates dollars spent on advertising and sales generated; sometimes used to help establish an advertising budget is known as Return on Advertising Spend (ROAS).Return on Advertising Spend (ROAS) is an analytical approach to measure the financial effectiveness of advertising campaigns by dividing the revenue earned from an ad campaign by the amount spent on that ad campaign.

The formula for calculating ROAS is: ROAS = Revenue from ad campaign / Cost of ad campaignROAS is used to analyze the efficacy of a particular advertising campaign. It is often used as a benchmark to compare different ad campaigns. It helps to make decisions about how to allocate advertising budgets in a more effective manner. If the ROAS is high, it indicates that the advertising campaign has been successful, and investing more in such an ad campaign is profitable. In contrast, if the ROAS is low, it means that the campaign is not performing well, and a change in strategy may be required.

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Assume the population is normally distributed with X-BAR=96.59, S=10.3, and n=10. Construct a90% confidence interval estimate for the population mean, μ. The 90% confidence interval estimate for the population mean, μ, is

92.56≤μ≤99.54.

90.62≤μ≤102.56.

91.02≤μ≤100.84

91.57≤μ≤101.13

Answers

The 90% confidence interval estimate for the population mean, μ, is 91.57 ≤ μ ≤ 101.13.

The correct answer is:

91.57≤μ≤101.13

Here's how to calculate the confidence interval:

Step 1: Calculate the standard error of the mean (SEM) using the formula SEM = S / sqrt(n), where S is the sample standard deviation and n is the sample size.

SEM = 10.3 / sqrt(10) = 3.26

Step 2: Calculate the margin of error (ME) using the formula ME = t(alpha/2, n-1) x SEM, where t(alpha/2, n-1) is the t-score with alpha/2 area to the right and n-1 degrees of freedom.

From the t-table or calculator, we find that the t-score for a 90% confidence level and 9 degrees of freedom is 1.833.

ME = 1.833 x 3.26 = 5.97

Step 3: Calculate the confidence interval by subtracting and adding the margin of error to the sample mean.

CI = X-BAR ± ME

= 96.59 ± 5.97

= (91.57, 101.13)

Therefore, the 90% confidence interval estimate for the population mean, μ, is 91.57 ≤ μ ≤ 101.13.

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find the 64th term of the arithmetic sequence 2 , − 3 , − 8 , . . . 2,−3,−8,...

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The 64th term of the given arithmetic sequence is -313.

The given sequence is 2, -3, -8,..., which is an arithmetic sequence.

Here, the first term (a1) = 2, and the common difference (d) = -3 - 2 = -5.

The nth term of the sequence can be found using the formula:

an = a1 + (n - 1)d

Where n is the term number.

To find the 64th term, we need to plug in n = 64 in the formula.

an = a1 + (n - 1)d = 2 + (64 - 1)(-5) = 2 - 63(5) = -313.

Therefore, the 64th term of the given arithmetic sequence is -313.

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Construct a 95% confidence interval estimate of the proportion of boys in all births. It is believed that among all births, the proportion of boys is 0.512. Do these sample results provide strong evidence against that belief?
a. The 95% confidence interval is between 0.462 and 0.528
b. There is strong evidence for the belief.

Answers

The 95% confidence interval is between 0.462 and 0.528

What is the equation of the line passing through the points (2, 5) and (4, -3)?

In this scenario, a 95% confidence interval is constructed to estimate the proportion of boys in all births.

The belief is that the proportion of boys is 0.512. The calculated confidence interval is between 0.462 and 0.528.

To interpret the confidence interval, we can say with 95% confidence that the true proportion of boys in all births lies within the range of 0.462 to 0.528.

Since the belief value of 0.512 falls within this interval, the sample results do not provide strong evidence against the belief.

This means that the sample data supports the belief that the proportion of boys is around 0.512.

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Slip N' Slide
Water Balloons
Sponge Toss
Water Tag
Water Limbo
Length
5 1/2 yards
1 3/4 yards
5 yards
6 1/2 yards
3 1/2 yards
Width
4 yards
5/6 yards
5 2/7 yards
4 2/5 yards
3 2/4 yards
Perimeter
Area

Answers

The space needed for each activity given above would be listed below as follows:

Slip N' Slide: perimeter=19 yards;Area=22 yards²

Water Balloons: perimeter=5.16 yards;Area=1.47 yards²

Sponge Toss: perimeter= 20.58 yards;Area=26.45 yards²

Water tag: Perimeter=21.8yards Area=28.6yards²

Water Limbo=perimeter = 14 yards;Area= 12.25 yards².

How to determine the perimeter and area of space fro the given activities above?

For Slip N' Slide;

Perimeter:2(length+width)

length=5 1/2 yards

width= 4 yards

perimeter = 2(5½+4)

= 19 yards

Area= l×w

= 5½×4

= 22 yards²

For Water Balloons:

Perimeter:2(length+width)

length=1¾yards

width= 5/6yards

perimeter = 2(1¾+⅚)

= 2×1.75+0.83

= 5.16 yards

area= 1¾×5/6

= 7/4×5/6

= 1.47 yards²

For Sponge Toss:

Perimeter:2(length+width)

length= 5 yards

width= 5 2/7yards = 5.29 yards

perimeter= 2(5+5.29)

= 2×10.29

= 20.58 yards

Area = 5×5.29

= 26.45 yards²

For water Tag:

Perimeter:2(length+width)

length= 6½yards=6.5

width = 4⅖ yards= 4.4

perimeter= 2(6.5+4.4)

= 2(10.9)

= 21.8yards

Area= 6.5×4.4

= 28.6yards²

For water Limbo:

Perimeter:2(length+width)

length= 3½ yards

width= 3½ yards

Perimeter = 2(3.5+3.5)

=2×7=14 yards

Area = 3.5×3.5= 12.25 yards²

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Find the directional derivative of the function at the given point in the direction of the vector v.

f(x, y) = 7 e^(x) sin y, (0, π/3), v = <-5,12>

Duf(0, π/3) = ??

Answers

The directional derivative of the function at the given point in the direction of the vector v are as follows :

[tex]\[D_{\mathbf{u}} f(\mathbf{a}) = \nabla f(\mathbf{a}) \cdot \mathbf{u}\][/tex]

Where:

- [tex]\(D_{\mathbf{u}} f(\mathbf{a})\) represents the directional derivative of the function \(f\) at the point \(\mathbf{a}\) in the direction of the vector \(\mathbf{u}\).[/tex]

- [tex]\(\nabla f(\mathbf{a})\) represents the gradient of \(f\) at the point \(\mathbf{a}\).[/tex]

- [tex]\(\cdot\) represents the dot product between the gradient and the vector \(\mathbf{u}\).[/tex]

Now, let's substitute the values into the formula:

Given function: [tex]\(f(x, y) = 7e^x \sin y\)[/tex]

Point: [tex]\((0, \frac{\pi}{3})\)[/tex]

Vector: [tex]\(\mathbf{v} = \begin{bmatrix} -5 \\ 12 \end{bmatrix}\)[/tex]

Gradient of [tex]\(f\)[/tex] at the point  [tex]\((0, \frac{\pi}{3})\):[/tex]

[tex]\(\nabla f(0, \frac{\pi}{3}) = \begin{bmatrix} \frac{\partial f}{\partial x} (0, \frac{\pi}{3}) \\ \frac{\partial f}{\partial y} (0, \frac{\pi}{3}) \end{bmatrix}\)[/tex]

To find the partial derivatives, we differentiate [tex]\(f\)[/tex] with respect to [tex]\(x\)[/tex] and [tex]\(y\)[/tex] separately:

[tex]\(\frac{\partial f}{\partial x} = 7e^x \sin y\)[/tex]

[tex]\(\frac{\partial f}{\partial y} = 7e^x \cos y\)[/tex]

Substituting the values [tex]\((0, \frac{\pi}{3})\)[/tex] into the partial derivatives:

[tex]\(\frac{\partial f}{\partial x} (0, \frac{\pi}{3}) = 7e^0 \sin \frac{\pi}{3} = \frac{7\sqrt{3}}{2}\)[/tex]

[tex]\(\frac{\partial f}{\partial y} (0, \frac{\pi}{3}) = 7e^0 \cos \frac{\pi}{3} = \frac{7}{2}\)[/tex]

Now, calculating the dot product between the gradient and the vector \([tex]\mathbf{v}[/tex]):

[tex]\(\nabla f(0, \frac{\pi}{3}) \cdot \mathbf{v} = \begin{bmatrix} \frac{7\sqrt{3}}{2} \\ \frac{7}{2} \end{bmatrix} \cdot \begin{bmatrix} -5 \\ 12 \end{bmatrix}\)[/tex]

Using the dot product formula:

[tex]\(\nabla f(0, \frac{\pi}{3}) \cdot \mathbf{v} = \left(\frac{7\sqrt{3}}{2} \cdot -5\right) + \left(\frac{7}{2} \cdot 12\right)\)[/tex]

Simplifying:

[tex]\(\nabla f(0, \frac{\pi}{3}) \cdot \mathbf{v} = -\frac{35\sqrt{3}}{2} + \frac{84}{2} = -\frac{35\sqrt{3}}{2} + 42\)[/tex]

So, the directional derivative [tex]\(D_{\mathbf{u}} f(0 \frac{\pi}{3})\) in the direction of the vector \(\mathbf{v} = \begin{bmatrix} -5 \\ 12 \end{bmatrix}\) is \(-\frac{35\sqrt{3}}{2} + 42\).[/tex]

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Solve the System of Inequalities 4x-39>-43 and 8x+31<23

Answers

Given system of inequalities are:[tex]$$4x - 39 > - 43 \cdots \cdots \cdots \left( 1 \right)$$$$8x + 31 < 23 \cdots \cdots \cdots \left( 2 \right)$$[/tex]The inequality (1) can be written as $$\begin

[tex]{array}{l} 4x > - 43 + 39\\ 4x > - 4\\ x > - 4/4\\ x > - 1 \end{array}$$[/tex]

So, the solution of the inequality (1) is x > -1.The inequality (2) can be written as [tex]$$\begin{array}{l} 8x < 23 - 31\\ 8x < - 8\\ x < - 8/8\\ x < - 1 \end{array}$$[/tex]So, the solution of the inequality (2) is[tex]x < -1[/tex]. Therefore, the solution of the given system of inequalities is [tex]x < -1 or x > -1[/tex].

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Use the reflection principle to find the number of paths for a simple random walk from So = 0 to S15 5 that hit the line y = 6.

Answers

The number of paths for a simple random walk from S₀ = 0 to S₁₅ = 5 that hit the line y = 6 is 16C5 - 10C5.

The reflection principle is a method for solving problems of Brownian motion. A Brownian motion is a stochastic process that has numerous applications. The reflection principle is a formula that may be used to determine the probability of the Brownian motion crossing a particular line. It is also employed to compute the probability of the motion returning to the starting point. Furthermore, the reflection principle may be used to determine the number of routes for a random walk that hits a certain line.The number of paths for a simple random walk from S₀ = 0 to S₁₅ = 5 that hit the line y = 6 may be determined using the reflection principle. It is also known as a one-dimensional random walk.

The reflection principle allows us to take any random walk from S₀ = 0 to S₁₅ = 5 and reflect it across the line y = 6, creating a new random walk from S₀ = 0 to S₁₅ = -5. We may calculate the number of paths for this new random walk using the binomial coefficient formula. We must then subtract the number of paths that would never have hit the line y = 6, giving us the number of paths for the original random walk that hits y = 6. Therefore, the number of paths for a simple random walk from S₀ = 0 to S₁₅ = 5 that hit the line y = 6 is 16C5 - 10C5.

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rewrite the equation 2 x 3 y = 6 in slope-intercept form. y = -2 x 6 y = - x 2 y = 2 x 6 3 y = -2 x 6

Answers

Thus, y = (-2/3)x + 2 is the final answer in slope-intercept form.

The equation 2x + 3y = 6 can be rewritten in slope-intercept form by solving for y.

To solve for y, first, subtract 2x from both sides of the equation, we get:

2x + 3y = 6- 2x = - 2x+ 3y = -2x + 6

Next, isolate y on one side by subtracting 2x from both sides of the equation and then dividing by 3.

We get:3y = -2x + 6y = (-2/3)x + 2

Therefore, the slope-intercept form of the equation 2x + 3y = 6 is y = (-2/3)x + 2.

This equation is written in slope-intercept form because the y variable is isolated on the left-hand side of the equation, and the slope of the line is represented by the coefficient of the x term, which is -2/3, and the y-intercept is the constant term, which is 2.

Thus, y = (-2/3)x + 2 is the final answer in slope-intercept form.

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5. Corgis are a particular breed of dog. The boxplot below displays the weights (in pounds) = of a sample of corgis, and the five-number summary for this sample of data is as follows: Minimum 20 pound

Answers

The sample of corgi weights ranges from 20 to 30 pounds, with a majority of dogs weighing between 23 and 28 pounds.

The boxplot displays the weights of a sample of corgis, and the five-number summary for this sample of data is as follows: Minimum 20 pounds, the first quartile is 23 pounds, the median is 25 pounds, the third quartile is 28 pounds, and the maximum is 30 pounds.

Corgis, a breed of dog, have weights that vary between 20 pounds and 30 pounds, according to the five-number summary displayed on the boxplot.

The first quartile, which is the weight of the heaviest 25% of dogs in the sample, is 23 pounds.

The median, which is the weight of the middle dog in the sample, is 25 pounds, while the third quartile, which is the weight of the heaviest 75% of dogs in the sample, is 28 pounds.

This suggests that the majority of dogs are between 23 and 28 pounds in weight, with a few outliers that weigh more than 28 pounds.

In conclusion, the sample of corgi weights ranges from 20 to 30 pounds, with a majority of dogs weighing between 23 and 28 pounds.

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if the equation has infinitely many solutions for xxx, what is the value of bbb ?

Answers

If A is the scale image of B, the value of x is 20.

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

From the figure,

A is a scale image of B.

This means,

12.5/10 = x/16

x = (12.5 x 16) / 10

x =  200/10

x = 20

Thus,

The value of x is 20.

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n simple linear regression, r 2 is the _____.
a. coefficient of determination
b. coefficient of correlation
c. estimated regression equation
d. sum of the squared residuals

Answers

The coefficient of determination is often used to evaluate the usefulness of regression models.

In simple linear regression, r2 is the coefficient of determination. In statistics, a measure of the proportion of the variance in one variable that can be explained by another variable is referred to as the coefficient of determination (R2 or r2).

The coefficient of determination, often known as the squared correlation coefficient, is a numerical value that indicates how well one variable can be predicted from another using a linear equation (regression).The coefficient of determination is always between 0 and 1, with a value of 1 indicating that 100% of the variability in one variable is due to the linear relationship between the two variables in question.

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Let E, F, and G be three events. Find expressions for the events so that, of E, F, and G, (a) only E occurs; (b) both E and G, but not F, occur; (c) at least one of the events occurs.

Answers

A. Only E occurs

B. Both E and G occurs.

C. At least one of the events occurs.

Let E, F, and G be three events. We have to find expressions for the events so that, of E, F, and G:

(a) Only E occurs: We require only E to occur. This means E occurs and F and G do not occur. Thus, the required expression is E and F' and G'.

(b) Both E and G, but not F, occur: We require E and G to occur, but not F. Thus, the required expression is E and G and F'.

(c) At least one of the events occurs: We require at least one of the events to occur. This means either E occurs, or F occurs, or G occurs, or two of these events occur, or all three events occur. Thus, the required expression is E or F or G or (E and F) or (E and G) or (F and G) or (E and F and G).

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what are the solutions to the following system of equations?x y = 3y = x2 − 9 (3, 0) and (1, 2) (−3, 0) and (1, 2) (3, 0) and (−4, 7) (−3, 0) and (−4, 7)

Answers

Therefore, the solutions to the given system of equations are: (2√2, -5) and (-2√2, -5).

Hence, option D (3, 0) and (−4, 7) are not solutions of the system of equations.

The given system of equations is: xy = 3.............(1)y = x² - 9..........(2) We have to solve the system of equations.

The value of y is given in the first equation. Therefore, we will substitute the value of y from equation (1) into equation (2).xy = 3x(x² - 9) = 3x³ - 27x  Now, we will substitute the value of x³ as a variable t.x³ = t

Therefore, t - 27x = 3t-24x=0t = 8x Substitute t = 8x into x³ = t.

We get:x³ = 8x => x² = 8 => x = ± √8 = ± 2√2. Substitute the value of x in y = x² - 9 to get the value of y corresponding to each value of x.y = (2√2)² - 9 = -5y = (-2√2)² - 9 = -5

A system of equations refers to a set of two or more equations that are to be solved simultaneously. The solution to a system of equations is a set of values for the variables that satisfies all the equations in the system.

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En la función de la imagen la ecuación de la asíntota vertical es___

Answers

The equation for the asymptote of the graphed function is x = 7

How to identify the asymptote?

The asymptote is a endlessly tendency to a given value. A vertical one is a tendency to infinity.

Here we can see that there is a vertical asymoptote, notice that in one end the function tends to positive infinity and in the other it tends to negative infinity.

The equation of the line where the asymptote is, is:

x = 7

So that is the answer.

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One of the biggest factors in a credit score is credit age. The credit age is the average length of accounts. Higher credit scores are given to longer credit ages. Suppose we have 4 accounts open: Auto Loan: 1 year 4 months Credit Card: 4 years 1 month Credit Card: 1 year 11 months Credit Card: 1 year 8 months The credit card of 4 years and 1 month has the highest balance and interest rate. We payoff the credit card and close the account. Give the new credit age. (Enter as a decimal and round to the hundredths) Question 6 1 pts

Answers

The new credit age is$$\frac{4.92 + 4.08}{3} \approx 3.33$$ years, or $3.33$ years to the nearest hundredth. Answer: \boxed{3.33}.

The credit age can be calculated by adding the age of each account together and dividing by the number of accounts. The initial credit age is obtained as follows:$1 \text{ year } + 4 \text{ months } = 1.33$ years$4 \text{ years } + 1 \text{ month } = 4.08$ years$1 \text{ year } + 11 \text{ months } = 1.92$ years$1 \text{ year } + 8 \text{ months } = 1.67$ yearsThe sum of the ages is $9$ years and $10$ months, or $9.83$ years. The number of accounts is $4$.Thus, the credit age is$$\frac{9.83}{4} \approx 2.46$$ years.We are to find the new credit age after closing the account with a credit card of 4 years and 1 month of credit age. The age of that credit card account was $4.08$ years.The sum of the ages of the three remaining accounts is$$1.33 + 1.92 + 1.67 = 4.92.$$ .

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Income (in thousands rounded to nearest thousand) 35 8 10 23 24 15 8 8 16 9 26 10 40 11 20 12 7 13 23 14 7 15 8 16 19 17 15 18 25 19 9 20 8 21 22 22 36 23 31 24 28 25 18 For the income levels of famil

Answers

For the income levels of families as 35, 8, 10, 23, 24, 15, 8, 8, 16, 9, 26, 10, 40, 11, 20, 12, 7, 13, 23, 14, 7, 15, 8, 16, 19, 17, 15, 18, 25, 19, 9, 20, 8, 21, 22, 22, 36, 23, 31, 24, 28, 25, and 18, the mode is 8.

To find the mode, we identify the value(s) that appear most frequently in the given data set. In this case, the income levels of families are provided as a list.

1) Examine the data set.

Look for repeated values in the data set.

2) Identify the mode.

Determine which value(s) occur most frequently. The mode is the value that appears with the highest frequency.

In the given data set, the value 8 appears three times, which is more frequently than any other value. Therefore, the mode of the income levels is 8.

Hence, the mode of the income levels for the given list is 8.

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The following estimated regression equation is based on 30 observations. The values of SST and SSR are 1,809 and 1,755, respectively. a. Compute R2 (to 3 decimals). X b. Compute R2 (to 3 decimals). X

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(a) R2 is approximately 0.031, indicating a weak relationship between the predictor variable(s) and the response variable.

(b) R2 is approximately 0.031, suggesting that the predictor variable(s) explain only a small portion of the variation in the response variable.

To compute R-squared (R2), we need the values of SST (total sum of squares) and SSR (sum of squares of residuals).

Given that, SST = 1,809

SSR = 1,755

The formula for calculating R2 is:

R2 = 1 - (SSR / SST)

(a) Compute R2:

R2 = 1 - (1755 / 1809) ≈ 0.031

Therefore, R2 is approximately 0.031.

(b) Since the information provided is the same as in part (a), the calculation of R2 remains the same. R2 is approximately 0.031.

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suppose that two stars in a binary star system are separated by a distance of 80 million kilometers and are located at a distance of 170 light-years from earth.
A) What is the angular separation of the two stars in degrees?
B) What is the angular separation in arceseconds?

Answers

To calculate the angular separation of the two stars, we can use the formula:

Angular separation = (Distance between stars) / (Distance from Earth) * (180 / π)

A) Calculating the angular separation in degrees:

Distance between stars = 80 million kilometers

Distance from Earth = 170 light-years ≈ 1.60744e+15 kilometers

Angular separation = (80e+6) / (1.60744e+15) * (180 / π) ≈ 0.0022308 degrees

Therefore, the angular separation of the two stars is approximately 0.0022308 degrees.

B) To calculate the angular separation in arcseconds, we can use the conversion:

1 degree = 60 arcminutes

1 arcminute = 60 arcseconds

Angular separation in arcseconds = (Angular separation in degrees) * 60 * 60

Angular separation in arcseconds ≈ 0.0022308 * 60 * 60 ≈ 8.03 arcseconds

Therefore, the angular separation of the two stars is approximately 8.03 arcseconds.

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Solve 6 sin(3x) = 4 for the two smallest positive solutions A and B, with A

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The two smallest positive solutions A and B, with A < B, are:A = (1/3)sin⁻¹(2/3) + (2π/3) ≈ 0.515, andB = (π/3) - (1/3)sin⁻¹(2/3) + (2π/3) ≈ 1.199.There are an infinite number of solutions to the equation, but we only need to find the two smallest positive solutions.

To solve the equation 6 sin(3x) = 4 for the two smallest positive solutions A and B, with A < B, we can follow the steps below:Step 1: Divide each side of the equation by 6 to isolate sin(3x):sin(3x)

= 4/6

= 2/3 Step 2 : Use the inverse sine function to solve for

3x:3x

= sin⁻¹(2/3) + k(2π) or 3x

= π - sin⁻¹(2/3) + k(2π),

where k is an integer.Step 3: Divide each side by 3 to solve for

x:x

= (1/3)sin⁻¹(2/3) + (2kπ)/3 or x

= (π/3) - (1/3)sin⁻¹(2/3) + (2kπ)/3,

where k is an integer.The two smallest positive solutions A and B, with A < B, are:

A = (1/3)sin⁻¹(2/3) + (2π/3) ≈ 0.515, andB

= (π/3) - (1/3)sin⁻¹(2/3) + (2π/3) ≈ 1.199.

There are an infinite number of solutions to the equation, but we only need to find the two smallest positive solutions.

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Right Bank Offers EAR Loans Of 8.69% And Requires A Monthly Payment On All Loans. What Is The APR For these monthly loans? What is the monthly payment for a loan of $ 250000 for 6b years (b)$430000 for 10years (c) $1450000 for 30 years?

Answers

The APR for the monthly loans offered by Right Bank is 8.69%.

The Annual Percentage Rate (APR) represents the yearly cost of borrowing, including both the interest rate and any additional fees or charges associated with the loan.

In this case, Right Bank offers EAR (Effective Annual Rate) loans with an interest rate of 8.69%. This means that the APR for these loans is also 8.69%.

To understand the significance of the APR, let's consider an example. Suppose you borrow $250,000 for 6 years.

The monthly payment for this loan can be calculated using an amortization formula, which takes into account the loan amount, interest rate, and loan term. Using this formula, you can determine the fixed monthly payment amount for the specified loan.

For instance, for a loan amount of $250,000 and a loan term of 6 years, the monthly payment would be determined as follows:

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fernando designs is considering a project that has the following cash flow and wacc data. what is the project's discounted payback? 2.09 years 2.29 years 2.78 years 1.88 years 2.52 years

Answers

Fernando Designs is considering a project that has the following cash flow and WACC data.

The project's discounted payback can be calculated using the following formula:

PV of Cash Flows = CF / (1 + r)n

Where: CF = Cash Flow, r = Discount Rate n = Time Period

PV of Cash Flows = -$200,000 + $60,000 / (1 + 0.12) + $60,000 / (1 + 0.12)2 + $60,000 / (1 + 0.12)3 + $60,000 / (1 + 0.12)4 + $60,000 / (1 + 0.12)5= -$200,000 + $53,572.65 + $45,107.12 + $38,069.49 + $32,169.11 + $27,168.54= -$4,413.09

Discounted Payback Period (DPP) = Number of Years Before Investment is Recovered + Unrecovered Cost at the End of the DPP / Cash Inflow during the DPP= 4 + $4,413.09 / $60,000= 4.0736 ≈ 4.07 years.

Hence, the project's discounted payback is approximately 4.07 years (option E).

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A school newpaper reporter decides to randomly survey 19 students to see if they will attend Tet (Vietnamese New Year) festivities this year. Based on past years, he knows that 22% of students attend Tet festivities. We are interested in the number of students who will attend the festivities. X~ B 22 .19 9 For the following questions, round to the 4th decimal place, if need be. Find the probability that exactly 9 of the students surveyed attend Tet festivities. Find the probability that no more than 7 of the students surveyed attend Tet festivities. Find the mean of the distribution. Find the standard deviation of the distribution. According to Masterfoods, the company that manufactures M&M's, 12% of peanut M&M's are brown, 15% are yellow, 12% are red, 23% are blue, 23% are orange and 15% are green. You randomly select peanut M&M's from an extra-large bag looking for a yellow candy. Round all probabilities below to four decimal places. Compute the probability that the first yellow candy is the seventh M&M selected. .0566 Compute the probability that the first yellow candy is the seventh or eighth M&M selected. .1047 Compute the probability that the first yellow candy is among the first seven M&M's selected. .6794 If every student in a large Statistics class selects peanut M&M's at random until they get a yellow candy, on average how many M&M's will the students need to select? (Round your answer to two decimal places.) yellow M&M's

Answers

6.67 is the average that the students need to select of M&M to get a yellow candy.

Given that, X ~ B(22, 0.19), where B stands for the binomial distribution, n = 19, p = 0.22, and we are interested in the number of students who will attend the festivities.

a) The probability that exactly 9 of the students surveyed attend Tet festivities is:

P(X = 9) = (19C9)(0.22)⁹(0.78)¹⁰ = 0.2255 (rounded to four decimal places)

Therefore, the probability that exactly 9 of the students surveyed attend Tet festivities is 0.2255.

b) The probability that no more than 7 of the students surveyed attend Tet festivities is:

P(X ≤ 7) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4) + P(X = 5) + P(X = 6) + P(X = 7) ≈ 0.2909

Therefore, the probability that no more than 7 of the students surveyed attend Tet festivities is 0.2909.

c) The mean of the distribution is:

µ = np = 19 × 0.22 = 4.18 (rounded to two decimal places)

Therefore, the mean of the distribution is 4.18.

d) The standard deviation of the distribution is:

σ = √(np(1 - p)) = √(19 × 0.22 × 0.78) ≈ 1.7159 (rounded to four decimal places)

Therefore, the standard deviation of the distribution is 1.7159.

According to Masterfoods, the company that manufactures M&M's, 12% of peanut M&M's are brown, 15% are yellow, 12% are red, 23% are blue, 23% are orange, and 15% are green. You randomly select peanut M&M's from an extra-large bag looking for a yellow candy. Round all probabilities below to four decimal places.

Compute the probability that the first yellow candy is the seventh M&M selected:

Using the geometric distribution formula, P(X = k) = (1 - p)^(k-1)p, where X is the number of trials until the first success occurs, p is the probability of success, and k is the number of trials until the first success occurs. Here, p = 0.15, and k = 7.

P(X = 7) = (1 - p)^(k-1)p = (1 - 0.15)^(7-1)(0.15) ≈ 0.0566

Therefore, the probability that the first yellow candy is the seventh M&M selected is 0.0566.

Compute the probability that the first yellow candy is the seventh or eighth M&M selected:

The probability that the first yellow candy is the seventh or eighth M&M selected is:

P(X = 7 or X = 8) = P(X = 7) + P(X = 8) ≈ 0.1047

Therefore, the probability that the first yellow candy is the seventh or eighth M&M selected is 0.1047.

Compute the probability that the first yellow candy is among the first seven M&M's selected:

Using the geometric distribution formula, P(X ≤ k) = 1 - (1 - p)^k, where X is the number of trials until the first success occurs, p is the probability of success, and k is the maximum number of trials. Here, p = 0.15, and k = 7.

P(X ≤ 7) = 1 - (1 - p)^k = 1 - (1 - 0.15)^7 ≈ 0.6794

Therefore, the probability that the first yellow candy is among the first seven M&M's selected is 0.6794.

Using the geometric distribution formula, E(X) = 1/p, where X is the number of trials until the first success occurs, and p is the probability of success. Here, p = 0.15.

E(X) = 1/p = 1/0.15 ≈ 6.67 (rounded to two decimal places)

Therefore, on average the students need to select about 6.67 M&M's to get a yellow candy.

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Let X Geom(p = 1/3). Find a simple, closed-form expression for 1 * [x+y] E (X − 1)!

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2(x+y) is the simple, closed-form expression for 1*[x+y]E(X-1)!.

Given, X ~ Geom(p=1/3).

We know that the pmf of the geometric distribution is: P(X=k) = pq^(k-1), where p = probability of success and q = probability of failure (1-p).

Here, p = 1/3 and q = 1 - 1/3 = 2/3.

P(X=k) = 1/3 * (2/3)^(k-1)

Let's find the expected value of X.

E(X) = 1/p = 1/(1/3) = 3

Let's simplify the given expression: 1*[x+y]E(X-1)!

= 1 * (x+y) * (E(X-1))!

We know that (E(X-1))! = 2!

Substituting E(X) = 3, we get:

1 * (x+y) * 2 = 2(x+y)

Therefore, a simple, closed-form expression for 1*[x+y]E(X-1)! is 2(x+y).

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Problem 4. (1 point) Construct both a 99% and a 80% confidence interval for $₁. B₁ = 34, s = = 7.5, SSxx = 45, n = 17 99% : # #

Answers

a. the 99% confidence interval for ₁ is (30.337, 37.663). b. the 80% confidence interval for ₁ is (32.307, 35.693).

(a) Construct a 99% confidence interval for ₁. B₁ = 34, s = 7.5, SSxx = 45, n = 17.

To construct a confidence interval for the coefficient ₁, we need to use the given information: B₁ (the estimate of ₁), s (the standard error of the estimate), SSxx (the sum of squares of the independent variable), and n (the sample size). We also need to determine the critical value corresponding to the desired confidence level.

Given:

B₁ = 34

s = 7.5

SSxx = 45

n = 17

To construct the 99% confidence interval, we first need to calculate the standard error of the estimate (SEₑ). The formula for SEₑ is:

SEₑ = sqrt((s² / SSxx) / (n - 2))

Substituting the given values into the formula, we have:

SEₑ = sqrt((7.5² / 45) / (17 - 2)) = 1.262

Next, we determine the critical value corresponding to the 99% confidence level. Since the sample size is small (n < 30), we need to use a t-distribution and find the t-critical value with (n - 2) degrees of freedom and a two-tailed test. For a 99% confidence level, the critical value is tₐ/₂ = t₀.₀₅ = 2.898.

Now we can construct the confidence interval using the formula:

CI = B₁ ± tₐ/₂ * SEₑ

Substituting the values, we have:

CI = 34 ± 2.898 * 1.262

Calculating the upper and lower limits of the confidence interval:

Upper limit = 34 + (2.898 * 1.262) = 37.663

Lower limit = 34 - (2.898 * 1.262) = 30.337

Therefore, the 99% confidence interval for ₁ is (30.337, 37.663).

(b) Construct an 80% confidence interval for ₁. B₁ = 34, s = 7.5, SSxx = 45, n = 17.

To construct an 80% confidence interval, we follow a similar process as in part (a), but with a different critical value.

Given:

B₁ = 34

s = 7.5

SSxx = 45

n = 17

First, we calculate the standard error of the estimate (SEₑ):

SEₑ = sqrt((s² / SSxx) / (n - 2)) = 1.262 (same as in part (a))

Next, we determine the critical value for an 80% confidence level using the t-distribution. For (n - 2) degrees of freedom, the critical value is tₐ/₂ = t₀.₁₀ = 1.337.

Using the formula for the confidence interval:

CI = B₁ ± tₐ/₂ * SEₑ

Substituting the values:

CI = 34 ± 1.337 * 1.262

Calculating the upper and lower limits:

Upper limit = 34 + (1.337 * 1.262) = 35.693

Lower limit = 34 - (1.337 * 1.262) = 32.307

Therefore, the 80% confidence interval for ₁ is (32.307, 35.693).

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how many possible ways are there to match or pair vertices (one-to-one) betweenaandb?

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The number of possible ways to match or pair vertices between a and b one-to-one is given by 5! (i.e. 120).

Given, Vertex set a = {a1, a2, a3, a4, a5}Vertex set b = {b1, b2, b3, b4, b5}Since we have to match or pair vertices between a and b one-to-one. Therefore, the number of possible ways to match or pair vertices between a and b one-to-one is given by the factorial of the number of vertices in the vertex set i.e. 5! (i.e. 120). Thus, there are 120 possible ways to match or pair vertices between a and b one-to-one.

When we need to match or pair vertices between two sets, we must look for the total number of possible ways we can do this. The number of possible ways to match or pair vertices between two sets one-to-one is given by the factorial of the number of vertices in the vertex set. In this case, both sets a and b have 5 vertices each, so the number of possible ways is 5!. That is 120 possible ways to match or pair vertices between a and b one-to-one. Therefore, the answer is 120.

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Question3 Consider the joint probability distribution given by 1 f(xy) = = (x + y) + -(x 30 a. Find the following: i. [15 marks] y)...................... where x = 0,1,2,3 and y = 0,1,2 Marginal distr

Answers

The marginal distribution of y is 1/5, 1/3, 2/5, 1/3 for y = 0, 1, 2, 3 respectively.

Given that the joint probability distribution is as follows.1 f(xy) = = (x + y) + -(x + y) 2 30

To find the marginal distribution of x, we need to sum all the values of f (xy) for different y at each value of x.x = 0f (0, 0) = (0 + 0) + -(0 + 0)2 30 = 1/60f (0, 1) = (0 + 1) + -(0 + 1)2 30 = 1/20f (0, 2) = (0 + 2) + -(0 + 2)2 30 = 7/60f (0, 3) = (0 + 3) + -(0 + 3)2 30 = 1/20

The sum of all the values of f (xy) for x = 0 is 1.

Therefore, the marginal distribution of x is 1 for all values of x.

x = 1f (1, 0) = (1 + 0) + -(1 + 0)2 30 = 1/20f (1, 1) = (1 + 1) + -(1 + 1)2 30 = 1/10f (1, 2) = (1 + 2) + -(1 + 2)2 30 = 7/60f (1, 3) = (1 + 3) + -(1 + 3)2 30 = 1/10

The sum of all the values of f (xy) for x = 1 is 3/20.

Therefore, the marginal distribution of x for x = 1 is 3/20.x = 2f (2, 0) = (2 + 0) + -(2 + 0)2 30 = 7/60f (2, 1) = (2 + 1) + -(2 + 1)2 30 = 7/60f (2, 2) = (2 + 2) + -(2 + 2)2 30 = 1/6f (2, 3) = (2 + 3) + -(2 + 3)2 30 = 7/60

The sum of all the values of f (xy) for x = 2 is 1/3.

Therefore, the marginal distribution of x for x = 2 is 1/3.x = 3f (3, 0) = (3 + 0) + -(3 + 0)2 30 = 1/20f (3, 1) = (3 + 1) + -(3 + 1)2 30 = 1/10f (3, 2) = (3 + 2) + -(3 + 2)2 30 = 7/60f (3, 3) = (3 + 3) + -(3 + 3)2 30 = 1/10

The sum of all the values of f (xy) for x = 3 is 3/20.

Therefore, the marginal distribution of x for x = 3 is 3/20.

Finally, the marginal distribution of y can be obtained by summing all the values of f (xy) for different x at each value of y.

The marginal distribution of y is as follows.y = 0f (0, 0) + f (1, 0) + f (2, 0) + f (3, 0) = 1/60 + 1/20 + 7/60 + 1/20 = 1/5y = 1f (0, 1) + f (1, 1) + f (2, 1) + f (3, 1) = 1/20 + 1/10 + 7/60 + 1/10 = 1/3y = 2f (0, 2) + f (1, 2) + f (2, 2) + f (3, 2) = 7/60 + 7/60 + 1/6 + 7/60 = 2/5y = 3f (0, 3) + f (1, 3) + f (2, 3) + f (3, 3) = 1/20 + 1/10 + 7/60 + 1/10 = 1/3

Therefore, the marginal distribution of y is 1/5, 1/3, 2/5, 1/3 for y = 0, 1, 2, 3 respectively.

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Woodward Manufacturing Combined Cash Budget More info For the Months of July through September July August September Quarte a. Cash collections from sales in July, August, and September, are projected to be $90,000, $155,000, and $129,000 respectively. Beginning balance of cash b. Cash payments for the upcoming third quarter are projected to be $141,000 in July, $109,000 in August, and $137,000 in September. Cash collections c. The cash balance as of the first day of the third quarter is projected to be $38,000. Total cash available d. Woodward Manufacturing has a policy that they must maintain a minimum cash balance of $25,000. Cash payments Ending cash balance before financing Financing: The company has a line of credit with the local bank that allows it to borrow funds in months that it would not otherwise have a minimum balance of $25,000. If the company has more than $25,000 at the end of any given month, it uses the excess funds to pay off any outstanding line of credit balance. Each month, Woodward Manufacturing pays interest on the prior month's line of credit ending balance. The actual interest rate that Woodward Manufacturing will pay floats since it is tied to the prime rate. However, the interest rate paid during the budget period is expected to be 2% of the prior month's line of credit ending balance (if the company did not have an outstanding balance at the end of the prior month, then Woodward Manufacturing does not have to pay any interest). All line of credit borrowings are taken or paid off on the first day of the month. As of the first day of the third quarter, Woodward Manufacturing did not have a balance on its line of credit. Borrowings Repayments Interest Payments Ending cash balance Print Done You are reading about companies developing strategies to compete in an international market. International growth is important for many organizations as a strategy for overall growth beyond geographical boundaries. Now, more than ever, many large companies are expanding their operations around the world to open up new expanded opportunities in countries where their own home markets may be saturated (McDonald's opened in China primarily because the US marketing growth was slowing down). There are 3 main approaches to competing internationally that you have read about. Discuss why you think it is important for companies like McDonald's, KFC, and Starbucks to choose a Transnational Strategy and not one of the other 2 options.course : Business policysource : Crafting & Executing Strategy 23rd edition. you earn $2,000 salary in May, but only deposit your payment in June because you have been out of town. your net worth will: select one: a. decrease in May because you did not deposit the payment. b. Increase in July after your deposit clears. c. Increase in June when you deposit it. d. Increase in May when you earned it. Question 5 (1 mark). If the value of owner's equity is initially $10,000, calculate the value of owner's equity after the following transactions: cash revenues $9,000, prepay rent $3,000, pay bank loan principal $2,000, pay maintenance fees $4,000 and buy a computer on account for $1,000. Select one: a. $13,000 b. $11,000 C. $15,000 d. $9,000 Question 6 (1 mark). A transaction that involves the balance sheet does not always impact net worth. Select one: a. False b. Depends on the value c. True d. Depends on the accounting policy Question 7 (1 mark). Accrual-based accounting means: Select one: a. expenses and revenues are recorded in the same period as they are incurred and earned b. assets are equal to liabilities c. assets and liabilities are recorded in the same period d. an increase in cash equals an increase in net worth (Inflation and interest rates)Assume the expected inflation rate is percent. If the current real rate of interest is percent, what should the nominal rate of interest be? Question content area bottom Part 1 The nominal rate of interest should be enter your response here%. (Round to two decimal places.) Simone is leasing a car originally valued at $42,200. The lease is being financed with an interest rate of 8.69% compounded monthly with Payments of $416 at the beginning of each month.How many payments will Simone have to make repay the original value of the car?