Question

Find (g o f)(-1). *

f(x) = x2 + 2x – 3
g(x) = x - 5

O A. -11
OB.-4
Oc.o
O D.-9

Answer 1

D -9

Explanation:

(g o f)(-1) = g(f(-1))

f(-1) =
`f(-1) = (-1)^(2) + 2(-1) - 3\\= 1 - 2 - 3\\= -4`

g(-4) = -4 - 5 = -9

So, (g o f)(-1) = -9