Question

Evaluate the exponential function f(x) = (1/2)x

Х 4, -1 ,0 ,1 ,3
f(x) 16, ?, 1, 1/2, 1/8

Which value completes this table?
A. 12
B. 8
C. 4
D. 2

Answer 1

2

Explanation:

You should substitute x = -1 to the f(x) and you will find:

`f(-1)=\left((1)/(2)\right)^(-1)=(1)/(2^(-1))=2`

So, the answer for the ? is 2.