Unit Test

Question 1

An exponential function f(x) is reflected across the x-axis to create the function g(x). Which is a true statement regarding f(x) and g(x)?

Revolt · Accepted Answer

T: The two functions have opposite output values of each other for any given input value.

Question 2

What are the domain and range of f(x) = + 2?

Revolt · Accepted Answer

C: domain: {x | x is a real number}; range: {y | y > 2}

Question 3

An exponential growth function has an asymptote of y = –3. Which might have occurred in the original function to permit the range to include negative numbers?

Revolt · Accepted Answer

B: A whole number constant could have been subtracted from the exponential expression.

Question 4

Which is the graph of the sequence defined by the function f(x) = 100(0.5)x - 1?

Question 5

Which is the graph of ?

Revolt · Accepted Answer

B:

Question 6

What is the greatest common factor of 4xy2 and 20x2y4?

Revolt · Accepted Answer

B: 4xy2

Question 7

Which is the graph of the sequence defined by the function f(x + 1) = f(x) when the first term in the sequence is 375?

Revolt · Accepted Answer

B:

Question 8

Tanisha is graphing the function f(x) = 25()x. She begins by plotting the point (1, 15). Which could be the next point she plots on the graph?

Revolt · Accepted Answer

A: (2, 9)

Question 9

The function f(x) = 5 is reflected over the y-axis. Which equations represent the reflected function? Select two options.f(x) = f(x) = f(x) = 5f(x) = 5(5)xf(x) = 5(5)–x

Revolt · Accepted Answer

C: f(x) = 5; D: f(x) = 5(5)x

Question 10

Teresa is factoring this polynomial by grouping. Which common factors should be used in the next step of factoring?10x3+3x2−20x−6(10x3+3x2)+(−20x−6)

Revolt · Accepted Answer

C: x2 and −2

Unit Test Answers

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