Question

How is the answer c , need help with the steps

Answer 1

`r(x)=4(x+2)^3\\\\C)\ m(x)=4x,\ a(x)=x^3,\ c(x)=x+2\\\\a(c(x))=(x+2)^3\\\\m(a(c(x)))=4(x+2)^3\\\\Answer:\ \boxed{C)}`