Answer:
Step-by-step explanation:
f(g(x)) = -4(g(x) - 1
f(g(x)) = -4(x^2 + 5) - 1
f(g(x)) = -4x^2 - 20 - 1
f(g(x)) = - 4x^2 - 19
f(5) = - 4*5^2 - 19
f(5) = -100 - 19
f(5) = - 119
You can rewrite (fog)(x) by putting g(x) in where you see an x in f(x) You can worry about the 5 later.
