Let f(x)=x^2+7 and g(x)= x+3/x. Find (g f)(-5)

Question

A.35/12
B.35/32
C.32/35
D.11/25

Answer 1

I think you mean g(x) = (x+3)/x
g(f) = [(x^2+7) + 3]/(x^2+7)
if x = -5
(x^2+7) = 32
g(32) = (32 + 3)/32
= 35/32 B