9.4 Find the following values assuming a regular, or ordinary, annuity: a. The present value of $400 per year for ten years at 10 percent b. The future value of $400 per year for ten years at l0 percent c. The present value of $200 per year for five years at 5 percent d. The future value of $200 per year for five years at 5 percent.

I know how it's done for a, but how is the spreadsheet done for b, c & d.