The expression below shows the population of butterflies in a forest after 4x years.


f(x) = 40(1.04)4x


Which of the following is an equivalent function?

Af(x) = 40(4.1600)x
Bf(x) = 480(1.04)x
Cf(x) = 40(1.1699)x
Df(x) = 480(4.1600)x