Question

Use the function below to find f(-4).

f(x) = 2^x

A. 1/8
B. -8
C. -16
D. 1/16

Answer 1

D. 1/16

Explanation:

f(-4) means you need to find the answer when x= -4 so you need to answer 2^-4 which is 1/16

Answer 2

The answer is 1/16

Explanation:

F(x) = 2^x

Insert and replace

F(4) = 2^-4

F(4) = 1/2*2*2*2 = 1/16

Therefore the answer is 1/16