Question

If f(x)=3x-9 and g(x)=x^2, what is (g o f)(5)?

Answer 1

(g o f)(5) = g(f(5))

f(5) = 3(5) - 9 = 15 - 9 = 6

g(f(5)) = g(6) = (6)² = 36

Answer: 36