4. If f(x) = x2, g(x) = 5x, and h(x) = x +4, find each value.
Find h[f(4)].

Step-by-step explanation:
f(x) = x²
g(x) = 5x
h(x) = x + 4
= h[f(4)]
= x + 4
= f(4) + 4
= (4)² + 2
= 16 + 2
= 18
h[f(4)] = 18