Question

I need help with this question

Answer 1

13

Explanation:

g(x) = 2x - 3

g(4) = 2(4) - 3 = 5

(fog)(x) = f(g(x)) = f(g(4))

= 4(5) - 7

= 20 - 7

= 13

Answer 2

13

Explanation:

put equal g into f then solve then put x=4 then solve again