Question

Let f(x) = -2x - 7 and g(x) = -4x + 3. Find (f o g)(-5)

A.
-53


B.
-9


C.
3


D.
23

Answer 1

(f o g)
f(x)= -2x-7
g(x)==-4x+3
(f o g) = -2(-4x+3)-7
(f o g)= 8x-6-7

substitute -5 to x
=8(-5)-6-7
=-40-6-7
=-53