Please Help me...

Question

Which of the following is CORRECT about the functions 

f(x)=1-x^2,g(x)=x+5

A. f0g(x)=(1-x^2)(x+5)

B. f(g(-1))=-3

C. gof(2)=2

D. f(g(x))=1+(x+5)^2

Answer 1

IN this question, Choice C is true.

gof(2) means first find f(2) ==> 1 - (-2)² = 1-4 = -3

Plug this -3 into g(x) ==> g(-3) = -3 + 5 = 2

So, gof(2) = 2