what is the future value of $4000 at 6% compounded semiannually for nine years rounded to the nearest cent?

Answer 1

what is
4000(1.03)^18 ?

Answer 2

That is what I came up with, so when I do my calculation as followed 4000 x 1.03 i get 4120. I understand the ^18 is coming the 2x9, but somehow I'm confused on the next step after my first calculation step.