Question

F(x) = -5x
g(x) = 8x^2 - 5x - 9
find (f•g)(x)

Answer 1

B

Explanation:

You are making composite functions, since all the answers provided dont fit, I only suggest to clearify that the lone term in the B option, is actually 45x and not 45.

If this is the case, composite functions means that you eval the expresion g(x) in every x variable found in f(x).

Using this, it gives you that f(g(x))=
`-40x^(2) +25x+45`