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Mathematics, 11.03.2021 17:30 cxttiemsp021

Question 1 (6 points) Select the interval(s) where the function f(x)=2x3โˆ’3x2โˆ’12x+20 is only increasing.

Question 1 options:

โˆ’โˆž < x < โˆž

0 < x < โˆž

โˆ’2.5 < x <โˆž

โˆ’1 < x < 2

2 < x < โˆž

โˆ’โˆž < x < โˆ’1
Question 2 (6 points)
Select the interval(s) where the function f(x)=x3+4x2+1 is only increasing.

Question 2 options:

โˆ’2.7 < x< 1.8

0 < x < 4

โˆ’โˆž
โˆ’โˆž< x < 0

0 < x < โˆž

1.8 < x < โˆž
Question 3 (3 points)
Identify the interval where the graph is only decreasing.

Question 3 options:

(โˆ’2, 1)

(โˆ’3, 2)

(โˆ’3, โˆ’1)

(โˆ’4, 2)
Question 4 (3 points)
What is the apparent solution set to the system of equations:

Question 4 options:

{(1.5, 2.5), (3, 2)}

{(โˆ’3, 2), (1.5, โˆ’3)}

{(โˆ’2, โˆ’3), (2.5, โˆ’1.5)}

{(โˆ’2.5, 1.5), (2, โˆ’3)}
Question 5 (3 points)
Saved
What are the apparent solutions to the system of equations:

Question 5 options:

{(โˆ’4, 3), (โˆ’1, 0)}

{(โˆ’5, 0), (โˆ’313, 0), (โˆ’1, 0)}

{(โˆ’3, 4), (โˆ’2, โˆ’2)}

{(0, โˆ’5), (0, 5)}
Question 6 (3 points)
Saved
Given f(x)=3xโˆ’4 and g(x)=x2โˆ’3, find (g โˆ˜ f)(x).

Question 6 options:

9x2+13

3x2โˆ’13

9x2โˆ’24x+19

9x2โˆ’24x+13
Question 7 (3 points)
What are the x-coordinates to the solutions of the system of equations: {x+y+10=0x2+yโˆ’2=0
Question 7 options:

x = -3, -7

x = 4, 14

x = -3, 4

x = -4, 3

Question 8 (6 points)
What are the y-coordinates for the solution to the system of equations: {yโˆ’x2+9xโˆ’6=0yโˆ’x+3=0
Make sure to select all the correct answers.

Question 8 options:

9

1

8

6

-3

-9

-2

2

Question 9 (3 points)
Question 9 options:
Given f(x)=2x and g(x)=x2+3, find (g โˆ˜ f)(โˆ’3).

Type final answer only in the blank.

Question 10 (3 points)
Question 10 options:
Given f(x)=x2+3x and g(x)=2x2, find (f โˆ˜ g)(โˆ’1).

Type answer only in the box.

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Answers: 3

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Question 1 (6 points) Select the interval(s) where the function f(x)=2x3โˆ’3x2โˆ’12x+20 is only increas...
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