Question

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

Answer 1

(f o g)(-5) = -53

Explanation:

Step 1: Define

f(x) = -2x - 7

g(x) = -4x + 3

Step 2: Find f(g(x))

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

f(g(x)) = 8x - 6 - 7

f(g(x)) = 8x - 13

Step 3: Find (f o g)(-5)

(f o g)(-5) = 8(-5) - 13

(f o g)(-5) = -40 - 13

(f o g)(-5) = -53