Question

Find f(-2) for f(x) = 3.2.
O A. 2/1
OB.
36
O C. -36
OD. -12
3/4

Answer 1

A
f(-2)=3.2^-2
2^-2=1/2^2=1/4
3x1/4 =3/4

Answer 2

3/4 (A)

Explanation:

replace x with -2 in the function

3 · 2^-2 = 3 · 0.25

3 · 0.25 = 0.75

0.75 = 3/4