Question

Find g[f(-2)], if f(x) = x^2 and g(x) = 3x – 5.

A. -17

B. -7

C. 7

D. -44

Answer 1

`f(x)=x^2;g(x)=3x-5\\\\g[f(-2)]=3* (f(-2))^2-5=3*(-2)^2-5=3*4-5=7`

Answer: c

hope it helps

Answer 2

g[f(-2)] = 7

Explanation:

f(x) = x^2

g(x) = 3x – 5

g[f(-2)]

First find f(-2) = (-2)^2 = 4

Then find g(4) = 3(3) -5 = 12-5 = 7