Consider functions fand g.
f(x) = -23
g(x) = |x − 1
What is the value of (go f)(4)?

A. 9
B. - 1/8
C. -9
D. 1/8

Answer:

(-2 . x) + (-2 . 5) = 4

-2x + -10 = 4

-2x = 4 + 10

-2x / -2 = 14/- 2

x = -7

All the best to you!

Answer:

The expression a[(9b-c)+z] can be simplified using the distributive property of multiplication. The distributive property states that:

a(b + c) = ab + ac

Using this property, we can distribute the a to the terms inside the brackets:

a[(9b-c)+z] = a(9b-c) + az

Now, we can distribute the a again to get:

a(9b-c) + az = 9ab - ac + az

Therefore, the expression a[(9b-c)+z] is equivalent to 9ab - ac + az.

Answer:

Step-by-step explanation: Equivalent to 9ab - ac + az.

Answer: 11.1 ft

Step-by-step explanation:

The statement, "Only datasets having a linear relationship between variables can be assessed using regression analyses" is False, because Non-Linear relationships also can be assessed, the correct option is (b)False.

The Regression Analysis can be used to assess the relationship between variables, including non-linear relationships.

There are various types of regression models that can capture non-linear relationships, such as polynomial regression, exponential regression, and logarithmic regression.

The interpretation of the regression coefficients and other statistics may be different in non-linear regression models compared to linear regression models.

Therefore, the given statement is (b)False.

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The best possible equation of the line of best fit would be →

y = 8.6x + 10.5.

A scatter plot is a type of plot or mathematical diagram using Cartesian coordinates to display values for typically two variables for a set of data

Given is a scatter plot as shown in the image.

For the given graph the correlation is positive. So, we can write the slope of the line of the best fit as positive. So, we can write the equation of the line of best fit as → y = 8.6x + 10.5.

Therefore, the best possible equation of the line of best fit would be →

y = 8.6x + 10.5.

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Answer:

2(−x 2−3)

Simplify the expression

−2x 2−6

Factor the expression

−2(x 2+3)

If today it was sunny in the morning and raining in the afternoon, and Laura traveled a total of 24 km in 40 minutes, then she is calculated to have rode the electric scooter for  24 minutes in the afternoon.

Let's assume that Laura rode her scooter for x minutes in the morning and for (40 - x) minutes in the afternoon.

In the morning, she traveled a distance of 45 × (x/60) km.

In the afternoon, she traveled a distance of 30 × ((40-x)/60) km.

The total distance traveled is 24 km, so we can set up the equation:

45 × (x/60) + 30 × ((40-x)/60) = 24

Multiplying both sides by 60, we get:

45x + 30(40-x) = 1440

Simplifying and solving for x, we get:

15x + 1200 = 1440

15x = 240

x = 16

Therefore, Laura rode her scooter for (40-16) = 24 minutes in the afternoon.

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The question is :

Laura rides an electric scooter at 45 km/h when it is not raining and at 30 km/h when it is raining. Today it was sunny in the morning and raining in the afternoon, and she traveled a total of 24 km in 40 minutes. How many minutes did she ride in the afternoon?

1. The dimensions of A are 6 x 4.

2. The function is S could be onto, but it cannot be one-to-one.  (C)

1. This is because T: R4 → R6 is a matrix transformation that maps from a 4-dimensional space to a 6-dimensional space. Therefore, the matrix A must have 6 rows and 4 columns in order to be able to multiply with a 4-dimensional vector x and produce a 6-dimensional vector T(x).

2. This is because S: R3 → R2 is a matrix transformation that maps from a 3-dimensional space to a 2-dimensional space.

This means that there are more input vectors than there are output vectors, so it is not possible for S to be one-to-one. However, S could be onto if every vector in R2 can be obtained from some vector in R3 through the transformation S(x) = Bx.

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1). 15 days

2). 115.2 pounds.

3). 500 meters

1. To find out when the couple will have another day off together, we need to find the least common multiple (LCM) of their work schedules. The LCM of 3 and 5 is 15, so the couple will have another day off together after 15 days.

2. The weight W of an object above the earth varies inversely as the square of the distance D from the center of the earth.

This means that W = k/D^2, where k is a constant.

To find k, we can plug in the values given in the question: 180 = k/4000^2.

Solving for k gives us k = 180*4000^2 = 2880000000. Now we can plug in the new distance, 4000 + 1000 = 5000 miles, to

find the new weight: W = 2880000000/5000^2 = 115.2 pounds.

3. To find the total distance traveled by the fly, we need to find out how long it takes for the turtles to meet.

The combined rate of the turtles is 10 + 20 = 30 m/s, so it will take them 150/30 = 5 seconds to meet.

The fly travels at a constant rate of 100 m/s, so in 5 seconds it will have traveled 100*5 = 500 meters.

Therefore, the total distance traveled by the fly is 500 meters.

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The expressions are equivalent to g + h + (j + k) is g+(h+j)+k and (g+h)+j+k.

What is an associative property?

As some binary operations have the associative property, moving parenthesis around in an expression won't affect the outcome. Associativity is a legitimate rule of replacement for expressions in logical proofs in propositional logic.

Here, we have

Given:  g + h + (j + k)

We have to find the expressions that are equivalent to the given expression.

By applying the associative property of equality: (a + b) + c = a + (b + c)

we can see that the parenthesis does not mean anything when we are only doing addition.

Hence, the expressions are equivalent to g + h + (j + k) is g+(h+j)+k and (g+h)+j+k.

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Answer:

36.87o

Step-by-step explanation:

Since ABC is a right triangle

cos(x) = adjacent/hypotenuse

cos(x) = 12/15

x = cos^-1 (12/15) = 36.87o

If Andy traveled 10 miles and paid a $12 tip to his drive. Sammy traveled 15 miles and paid a $9 tip to his driver. the cost per mile to ride the Uber is $0.60.

Let the cost per mile to ride the Uber be "x".

Then, Andy paid a total of 10x + 12 dollars for his 10-mile trip.

Similarly, Sammy paid a total of 15x + 9 dollars for his 15-mile trip.

Since both customers paid the same amount, we can set their total costs equal to each other and solve for "x":

10x + 12 = 15x + 9

Subtracting 10x and 9 from both sides:

3 = 5x

Dividing by 5:

x = 0.6

Therefore, the cost per mile to ride the Uber is $0.60.

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The Correct statement is

ST and KT intersect at 90 degree.

The basic qualities listed below make it simple to identify parallel lines.

Parallel lines are defined as straight lines that are always the same distance apart.

Parallel lines, no matter how far they are extended in either direction, never intersect.

Given:

We have given that ST || JK

First ST and JK have no perpendicular relation.

Now, ST and KT intersect at 90 degree.

Now, ST is not parallel to JT but it is given that ST || JK.

and, KT is act as transversal not JK.

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Answer: Supercomputers

Step-by-step explanation: Supercomputers are high-performance computing systems that are designed to perform complex and demanding tasks at incredibly fast speeds.  They are capable of processing massive amounts of data and performing calculations at a rate that far exceeds that of conventional computers.

Supercomputers are used for a variety of purposes, including scientific research, weather forecasting, modeling and simulation, data analysis, and artificial intelligence.  They are especially valuable in fields that require extensive computational power, such as astrophysics, molecular modeling, climate studies, and cryptography.

One key characteristic of supercomputers is their parallel processing capability.  They are designed with multiple processors or cores that work together to execute tasks simultaneously, allowing for faster and more efficient computation. This parallel architecture enables supercomputers to tackle large-scale problems by breaking them down into smaller tasks that can be processed concurrently.

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Answer:

We can use the concept of proportion to estimate the total number of sweets in the jar.

Let's represent the total number of sweets in the jar by "x". We know that 90 of these are pear drops. So the proportion of pear drops in the jar is 90/x.

Leona takes a random sample of 70 sweets from the jar and finds that 22 of these are pear drops. So the proportion of pear drops in the sample is 22/70.

We can assume that the proportion of pear drops in the sample is roughly equal to the proportion of pear drops in the jar. Therefore, we can set up a proportion and solve for "x":

90/x = 22/70

Cross-multiplying, we get:

22x = 90 * 70

Dividing both sides by 22, we get:

x = 90 * 70 / 22

Using a calculator, we get:

x ≈ 287

Therefore, an estimate for the total number of sweets in the jar is 287, rounded to the nearest integer.

Answer:

We can use the concept of proportion to estimate the total number of sweets in the jar.

Let's represent the total number of sweets in the jar by "x". We know that 90 of these are pear drops. So the proportion of pear drops in the jar is 90/x.

Leona takes a random sample of 70 sweets from the jar and finds that 22 of these are pear drops. So the proportion of pear drops in the sample is 22/70.

We can assume that the proportion of pear drops in the sample is roughly equal to the proportion of pear drops in the jar. Therefore, we can set up a proportion and solve for "x":

90/x = 22/70

Cross-multiplying, we get:

22x = 90 * 70

Dividing both sides by 22, we get:

x = 90 * 70 / 22

Using a calculator, we get:

x ≈ 287

Therefore, an estimate for the total number of sweets in the jar is 287, rounded to the nearest integer.

Step-by-step explanation:

By evaluating the function in j = 1, we conclude that each bottle costs 80 cents.

We know that the total cost in dollars can be represented by the linear equation:

C(j) = 0.8*j

Where C is the cost, and j is the number of juice bottles bought.

Then to get the cost of each bottle, we can evaluate the function in 1, which means buying only one.

C(1) = 0.8*1 = 0.8

So each bottle costs $0.80 (or 80 cents).

In mathematics, a function is a relationship between a set of inputs and a set of possible outputs, such that each input is associated with a unique output. Functions are represented by mathematical expressions or equations that specify how the input values are transformed into output values. For example, the function f(x) = x^2 takes an input value x and produces an output value equal to x squared.

Functions play a crucial role in many areas of mathematics, science, and engineering. They can be used to model complex systems, analyze data, and solve problems. Functions are also used in computer programming, where they are used to encapsulate a specific set of operations that can be reused throughout a program.

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The cubic inch value that most closely approximates the prism's volume is 12in³.

Any three-dimensional solid's volume is the area it takes up. The shapes of these solids include cubes, cuboids, cones, cylinders, and spheres.

Forms come in a wide range of volumes. We have looked at a variety of three-dimensional solids and shapes, including cubes, cuboids, cylinders, cones, and more. We'll learn how to calculate the volumes of each of these forms.

To find the volume of the rectangular prism in the above problem, multiply its length, width, and height. The image reveals the rectangle's measurements to be around 5.5 inches long and 4 inches broad. Volume is calculated as follows: Volume = Length x Width x Height

= 5.5 inches x 4 inches x 218 inches

= 4 x 5.5 x 218

= 4 x 1199

= 4796

4796 cubic inches is the result.

When we round this response to the nearest whole number 12 in³ is the measurement that most closely approximates the prism's volume in cubic inches.

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The complete question is:

The rectangle shown represents the base of a rectangular prism. Use the ruler provided to measure the length and width of the rectangle to the nearest 14 inch. The height of the prism is 218inches. The dimensions are 5.5 inches and 4 inches. Which measurement is closest to the volume of the prism in cubic inches?

F.33 inches3

G.23 inches3

H.11 inches 3

J.12 inches 3

The given statement is true for all matrices A.

1) For any 2x2 matrices A and B, (AB)2 = A2B2 - False. A counter-example to this claim would be if A and B are non-invertible matrices, such as A = [1, 0; 0, 0] and B = [1, 0; 0, 1]. (AB)2 = [1, 0; 0, 0], but A2B2 = [1, 0; 0, 1].

2) For any 2x2 matrices A, B, and C, if AB = AC, then B = C - True. This statement is true, as long as A is an invertible matrix. This can be seen from the properties of matrix multiplication; if AB = AC, then B = A-1AC = C.

3) For any 2x2 matrix A, if A2 = A, then either A = 0 or A = I - False. A counter-example to this claim would be if A = [1, 0; 0, 0], then A2 = A = [1, 0; 0, 0], but A ≠ 0 and A ≠ I.

1) Counter-example:Let the matrices A and B be given by\[A=\begin{pmatrix} 1 & 0 \\ 0 & -1 \end{pmatrix}, B=\begin{pmatrix} 0 & 1 \\ 0 & 0 \end{pmatrix}\].Now,\[(AB)^2=\begin{pmatrix} 0 & 1 \\ 0 & 0 \end{pmatrix}^2=\begin{pmatrix} 0 & 0 \\ 0 & 0 \end{pmatrix}\].and\[A^2B^2=\begin{pmatrix} 1 & 0 \\ 0 & -1 \end{pmatrix}^2\begin{pmatrix} 0 & 1 \\ 0 & 0 \end{pmatrix}^2=\begin{pmatrix} 1 & 0 \\ 0 & 1 \end{pmatrix}\begin{pmatrix} 0 & 0 \\ 0 & 0 \end{pmatrix}=\begin{pmatrix} 0 & 0 \\ 0 & 0 \end{pmatrix}\]Hence\[(AB)^2\ne A^2B^2\]2) Let AB=AC. Then, we need to show that B=C. Let A, B and C be given as follows:\[A=\begin{pmatrix} 1 & 2 \\ 0 & 1 \end{pmatrix}, B=\begin{pmatrix} 3 \\ 4 \end{pmatrix}, C=\begin{pmatrix} 5 \\ 6 \end{pmatrix}\].Now, AB=\[\begin{pmatrix} 1 & 2 \\ 0 & 1 \end{pmatrix}\begin{pmatrix} 3 \\ 4 \end{pmatrix}=\begin{pmatrix} 11 \\ 4 \end{pmatrix}\]and AC=\[\begin{pmatrix} 1 & 2 \\ 0 & 1 \end{pmatrix}\begin{pmatrix} 5 \\ 6 \end{pmatrix}=\begin{pmatrix} 11 \\ 6 \end{pmatrix}\]Thus,\[AB=AC\]But, B=\[\begin{pmatrix} 3 \\ 4 \end{pmatrix}\]and C=\[\begin{pmatrix} 5 \\ 6 \end{pmatrix}\].Therefore,\[B\ne C\]Thus, AB=AC does not imply that B=C.3) True.According to the given statement, \[A^2=A\]Then,\[A^2-A=0\]⇒\[A(A-I)=0\]Either A=0 or A=I. Thus, the given statement is true for all matrices A.

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The value of r is approximately 0.62.

The sum of the first 3 terms of a geometric sequence is 30 1/2 and the sum of the 4th, 5th, and 6th term is 3 15/16. To determine the value of r, we can use the formula for the sum of a geometric sequence:

S_n = a_1 (1 - r^n) / (1 - r)

Where S_n is the sum of the first n terms, a_1 is the first term, and r is the common ratio.

For the first 3 terms, we have:

30 1/2 = a_1 (1 - r^3) / (1 - r)

For the 4th, 5th, and 6th terms, we can use the formula for the nth term of a geometric sequence:

a_n = a_1 r^(n-1)

So the 4th term is a_1 r^3, the 5th term is a_1 r^4, and the 6th term is a_1 r^5. The sum of these terms is:

3 15/16 = a_1 r^3 + a_1 r^4 + a_1 r^5

We can factor out a_1 r^3 to get:

3 15/16 = a_1 r^3 (1 + r + r^2)

Now we can substitute the expression for a_1 r^3 from the first equation into the second equation:

3 15/16 = (30 1/2) (1 - r) (1 + r + r^2)

Simplifying and rearranging terms, we get:

r^5 - 8r^4 + 15r^3 - 8r^2 + r = 0

This is a quintic equation, which cannot be solved algebraically. However, we can use numerical methods to find an approximate value of r. Using a graphing calculator, we find that r ≈ 0.62.

Therefore, the value of r is approximately 0.62.

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To solve the inequality -12x - 5 > 1 + 18x, we need to isolate the variable x on one side of the inequality. Here are the steps to do so:

1. Add 12x to both sides of the inequality to eliminate the -12x on the left side:
-5 > 1 + 30x

2. Subtract 1 from both sides of the inequality to eliminate the 1 on the right side:
-6 > 30x

3. Divide both sides of the inequality by 30 to isolate the variable x:
-6/30 > x

4. Simplify the fraction on the left side:
-1/5 > x

Therefore, the solution to the inequality is x < -1/5. The correct value of A is -1/5.

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Answer:

The given information that the graph of a polynomial function continues down on the left and continues up on the right is an indication that the degree of the polynomial is odd.

If the degree of the polynomial is odd, then the leading coefficient must be either positive or negative depending on the end behavior of the graph.

Since the graph continues down on the left and up on the right, the end behavior indicates that the leading coefficient is negative.

Therefore, the only option that satisfies the given information is:

d) The function is odd, with a negative leading coefficient.

The statements that are true are

The relative minimum function is (3, 0)

When t > 3 the function will increase

To find the maximum and minimum of a function, find the points where the function's derivative is equal to zero or undefined. These points are called critical points.

We then evaluate the function at these critical points and at the endpoints of the interval to determine the maximum and minimum values. To find the critical points of the function find the derivatives of the given function

Here we have a graph

The graph shows the number of coins in a person's collection

The function is defined as f(t) = t³ - 6t² + 9t  

To find the maximum and minimum of the function

Find the critical points where the derivative is equal to zero or undefined.

Differentiate f(t) with respect to t

=> f'(t) = 3t² - 12t + 9  

Now, set the derivative equal to zero and solve for t  

=> 3t² - 12t + 9 = 0

=> t² - 4t + 3 = 0  divide by 3

On Factoring the quadratic equation, we get:

=> (t - 3)(t - 1) = 0

=> t = 3 and t = 1

Therefore,

The critical points of the graph are t = 1 and t = 3.

Now differentiate f'(t) with respect to t

=> f''(t) = 6t - 12

At t = 1, f''(1) = 6 - 12 = - 6, which is less than zero.

Hence, f(t) has a local maximum at t = 1.

At t = 3, f''(3) = 18 - 12 = 6, which is greater than zero.

Hence, f(t) has a local minimum at t = 3.

At t = 4, f''(4) = 24 - 12 = 12

At t = 5, f''(5) = 30 - 12 = 18

Hence, f(t) will increase when t > 3

Therefore,

The statements that are true are

The relative minimum function is (3, 0)

When t > 3 the function will increase

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It would not be possible to construct a triangle with those given measurements.

What is triangle ?

Triangle can be defined which it consists of three sides, three angles and sum of three angles is always 180 degrees.

The conditions that will result in the construction of a unique triangle are:

C) side lengths: 2 in., 7 in., 8 in.

D) side lengths: 5 ft., 6 ft., 12 ft.

E) side lengths: 11 cm, 15 cm, 17 cm.

In each of these cases, the side lengths satisfy the triangle inequality, which states that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side. This ensures that the three sides can be connected to form a unique triangle.

The other options do not satisfy the triangle inequality, and

Therefore, it would not be possible to construct a triangle with those given measurements.

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The zeros in the given graph. (the one where its curved pointing downwards) is {-3,1}.

The solutions to the equation p(x) = 0, where p(x) stands for the polynomial, are the zeros of a polynomial. If we plot this polynomial as y = p, we can see that these are the values of x where y = 0. (x). In other words, these are the x-intercepts of the graph.

The polynomial's zeros can be found by locating the locations where its graph contacts or crosses the x-axis.

When f(x) = 0, or when the graph's y-coordinate is equal to 0, the zeroes of the graph are determined.

From the graph we see that, at y = 0 we have the values of x as:

1. x = -3 and x = 1

Hence, the zeros in the given graph. (the one where its curved pointing downwards) is {-3,1}.

2. Roots of the graph are - x = - 2 and x = 4, {-2, 4}

3. solutions to x² + 10x = 24,

x² + 10x - 24 = 0

x² + 12x - 2x - 24

x(x + 12) -2 (x + 12)

(x - 2) (x + 12)

x = 2 or x = -12

{-12,2}

4. solutions to x² + 18x = 4x - 49

x² + 14x + 49

x² + 7x + 7x + 49

x(x + 7) + 7 (x + 7)

(x + 7)(x + 7)

x = -7

{-7}

5.  zeros of x² - 9x = 0

x(x - 9) = 0

Either x = 0 or x = 9,

{0,9}

6. roots of 4x² - 24 = 20x

4x² - 20x - 24 = 0

x² - 5x - 6 = 0

x² -6x + x - 6 = 0

x(x - 6) + 1(x - 6) = 0

(x + 1) (x - 6)

x = -1 and x = 6

{-1,6}

7. correct option is y = x² - x - 6

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Answer:

V=103.

Step-by-step explanation:

V=πr2h

=π·2.82

·4.2≈103

.44636

Answer:

Step-by-step explanation:

the correct answer is 10.39 cubic feet

Answer: [tex]\sqrt2[/tex] or 1.41

There are 8 possible ways for the first 2 finishers to complete the marathon with different genders. There are 20 possible ways for Chantal to finish the race before David.

There are a couple of different ways to approach this problem, but one common method is to use the multiplication principle, which states that if there are A ways to do one thing and B ways to do another, then there are A*B ways to do both. We can apply this principle to both parts of the question.

a) If the first 2 finishers must have different genders, then we can think about the possible combinations of boys and girls. There are 2 options for the first finisher (either a boy or a girl), and then there are 4 options for the second finisher (either a boy or a girl, but not the same gender as the first finisher).

So, using the multiplication principle, we can find the total number of ways for the first 2 finishers to complete the marathon with different genders:

2 * 4 = 8

Therefore, there are 8 possible ways for the first 2 finishers to complete the marathon with different genders.

b) If Chantal must finish the race before David, then we can think about the possible positions for Chantal and David. There are 5 possible positions for Chantal (first, second, third, fourth, or fifth), and then there are 4 possible positions for David (second, third, fourth, or fifth, but not before Chantal).

So, using the multiplication principle, we can find the total number of ways for Chantal to finish before David:

5 * 4 = 20

Therefore, there are 20 possible ways for Chantal to finish the race before David.

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Answer:62 miles/hour

Step-by-step explanation:372 miles / 6 hours = 62 miles/hour 62 * 15 = 930 A driver travels 372 miles in 6 hours. At that rate, the driver will travel 930 miles in 15 hours

Answer: 62 mph

Step-by-step explanation:

372/6=62

:)

Answer:

The equation that represents a linear function is:

y equals one half times x minus 5

This is a linear equation because it has a constant rate of change, or slope, of one half. This means that for every increase of 1 in x, y will increase by 1/2. The equation is also in the standard form of a linear equation, y = mx + b, where m is the slope and b is the y-intercept.

The other equations are not linear functions:

x = 3 is a vertical line, which is not a function because it fails the vertical line test.

y equals three fourths times x squared is a quadratic function because it includes an x-squared term.

3x − 6 = 4 is a linear equation, but it is not in the standard form of y = mx + b. It can be rearranged to y = (3/1)x - 2, which is a linear equation in slope-intercept form.

1. The population in 2005 was 5000

2. when t is -2, it indicates that 1250 the population before 2 years was 1250

3. For t  - -2 population was more than 1000

An equation is a mathematical term, which indicates that the value of two algebraic expressions are equal.

a. To find the population of the fish species in 2005, we need to plug in t = 0 into the equation:

p = 5,000 .2^t

p = 5,000 .2^0

p = 5,000

Therefore, the population of the fish species in 2005 was 5,000.

b. When t is -2, it means we are two years before 2005, the year when the fish population in the lake was first surveyed. In other words, we are trying to find the population of the fish species two years before 2005. To do this, we plug in t = -2 into the equation:

p = 5,000 .2^t

p = 5,000 .2^-2

p = 5,000 .25

p = 1,250

Therefore, the population of the fish species two years before 2005 was 1,250.

c. The fish population at t = -2 is more than 1,000. We know this because we calculated that the population was 1,250, which is greater than 1,000.

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