Zero and Negative Exponents

Question 1

Which statements are true about exponential decay functions? Check all that apply.The domain is all real numbers.As the input increases, the output increases.The graph is the same as that of an exponential growth function.The base must be less than 1 and greater than 0.The function has a constant multiplicative rate of change.

Revolt · Accepted Answer

A: The domain is all real numbers.; D: The base must be less than 1 and greater than 0.; E: The function has a constant multiplicative rate of change.

Question 2

The initial value is.

Revolt · Accepted Answer

C: 1

Question 3

Which is an exponential decay function?

Revolt · Accepted Answer

D: f(x) = −2(0.7)x

Question 4

Which is the graph of f(x) = (2)-x ?

Revolt · Accepted Answer

B:

Question 5

Jason estimates that his car loses 12% of its value every year. The initial value is $12,000. Which best describes the graph of the function that represents the value of the car after x years?

Revolt · Accepted Answer

C: f(x) = 12,000(0.88)x, with a horizontal asymptote of y = 0

Question 6

The base, or rate of change, is.

Revolt · Accepted Answer

B: 1/3

Question 7

The domain is.

Revolt · Accepted Answer

D: all real numbers

Zero and Negative Exponents Answers

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