Looking for the formula and breakdown for the following question ? How the answer was found ?\

Calculating Annuities Due- Suppose you are going to recieve $15,800 per year for five years. The appropriate interest rate is 7.9 percent.

(a) What is the present value of the payments if they are in the form of an ordinary annuity ? What is the present value of if the payments are an annuity due ?

(b) Suppose you plan to invest the payments for five years. What is the future value if the payments are an oridnary annuity ? What if the payments are annuity due ?

(c) Which has the highest present value, the ordinary annuity or annuity due ? which has the highest future value ? Will this always be true ?