Question

How do you find `(goh)(-4+a)` given `g(a)=2a+2` and `h(a)=-2a-5`?

Answer 1

`8 - 4a`

Explanation:

Answer `x = g(h(a-4))`

`h(a - 4) = -2(a - 4) - 5 = -2a +8 - 5 = 3 - 2a`

Apply g.

`g(h(a - 4)) = g(3 - 2a) = 2(3 - 2a) + 2 = 6 - 4a + 2`