Question

If f(x) = -5x - 1 and g(x) = x - 6 what is (f g) (7)

Answer 1

You have

`(f\circ g)(x) = f(g(x)) \implies (f\circ g)(7) = f(g(7))`

So, we have to compute g(7) and feed it as input to f(x). We have

`g(7)=7-6=1 \implies f(g(7))=f(1)=-5-1=-6`

Answer 2

-6

Explanation:

I just took it and got it right ☺