Question

Let f(x) = x + 2 and g(x) = x2 Find ( g o f)(-5)

A. -3
B. 9
C. -10
D. 49

g(f(-5))=(-5+2)^2
g(x+2(-5))=(-5+2)^2

Am I right so far?

Answer 1

I'm not sure how you're doing it. First you have to find f(-5), then you plug in whatever you get from that into g(x).

Answer 2

I figured I was not doing it right.

Answer 3

Thank you.

Answer 4

No problem :)