Quiz 4 - the good assignment got a 100 on this class PDF

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the good assignment got a 100 on this class...

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If f(x) = 2x + 3, and g(x) = x2 + x, what is f ○ g? Select one:

a. 4x2 + 14x + 12

b. 4x2 + 12x + 9

c. x2 + 3x + 3

d. 2x2 + 2x + 3

e. None of these Feedback Your answer is incorrect. The correct answer is: 2x2 + 2x + 3 Question

2

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Let f(x) = – x2 – 4, x < 0. What is f-1? Select one:

a. –√(–x – 4)

b. –√(–x – 4), x < – 4

c. √(x + 4)

d. –√(–x – 4), x > – 4

e. None of these Feedback Your answer is incorrect. The correct answer is: –√(–x – 4), x < – 4 Question

3

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If f(x) = 3x – 5, what is the inverse of f? Select one:

a. -3x + 5

b. 5x – 3

c. x/3 + 5/3

d. x/3 – 5/3

e. None of these Feedback Your answer is incorrect. The correct answer is: x/3 + 5/3 Question

4

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Let f(x) = x2 – 4, x < 0. What is f-1? Select one:

a. -√(x – 4)

b. -√(x – 4), x > 4

c. -√(x + 4)

d. -√(x + 4), x >-4

e. None of these Feedback Your answer is incorrect. The correct answer is: -√(x + 4), x >-4 Question

5

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For f(x) = √(x + 5) + 2, what is the domain of f-1? Select one:

a. (-∞, ∞)

b. (0, ∞)

c. (-∞, 0)

d. [2, ∞)

e. None of these Feedback Your answer is incorrect. The correct answer is: [2, ∞) If f(x) = 2x + 3, and g(x) = x2 + x, what is f ○ g?

Select one:

a. 4x2 + 14x + 12

b. 4x2 + 12x + 9

c. x2 + 3x + 3

d. 2x2 + 2x + 3

e. None of these

Feedback Your answer is incorrect. The correct answer is: 2x2 + 2x + 3 Question 2 Not answered Marked out of 1.00 Not flaggedFlag question Question text Let f(x) = – x2 – 4, x < 0. What is f-1?

Select one:

a.

–√(–x – 4)

b. –√(–x – 4), x < – 4

c. √(x + 4)

d. –√(–x – 4), x > – 4

e. None of these

Feedback Your answer is incorrect. The correct answer is: –√(–x – 4), x < – 4 Question 3 Incorrect Mark 0.00 out of 1.00 Not flaggedFlag question Question text If f(x) = 3x – 5, what is the inverse of f?

Select one:

a. -3x + 5

b. 5x – 3

c. x/3 + 5/3

d. x/3 – 5/3

e. None of these

Feedback Your answer is incorrect.

The correct answer is: x/3 + 5/3 Question 4 Incorrect Mark 0.00 out of 1.00

Not flaggedFlag question Question text Let f(x) = x2 – 4, x < 0. What is f-1?

Select one:

a. -√(x – 4)

b. -√(x – 4), x > 4

c. -√(x + 4)

d. -√(x + 4), x >-4

e. None of these

Feedback Your answer is incorrect.

The correct answer is: -√(x + 4), x >-4 Question 5 Incorrect Mark 0.00 out of 1.00 Not flaggedFlag question Question text For f(x) = √(x + 5) + 2, what is the domain of f-1?

Select one:

a. (-∞, ∞)

b. (0, ∞)

c. (-∞, 0)

d. [2, ∞)

e. None of these

Feedback Your answer is incorrect.

The correct answer is: [2, ∞)...