Question

f(x)=2x+4 and h(x)=x^3

find (h o f)(2)

Answer 1

(h◦f)(2) = h(f(2)) = h(8) = 8^3 = 512

or,
(h◦f) = h(f) = f^3 = (2x+4)^3
so, (h◦f)(2) = (2*2+4)^3 = 8^3 = 512