Using the appropriate interest table, answer the following questions. (Each case is independent of the others.) a. is the future value of 20 periodic payments of $4,000 each made at

Using the appropriate interest table, answer the following questions. (Each case is independent of the others.) a. is the future value of 20 periodic payments of $4,000 each made at the beginning of each period and compounded at 8%? b. is the present value of $2,500 to be received at the beginning of each of 30 periods, discounted at 5% compound interest? c. is the future value of 15 deposits of $2,000 each made at the beginning of each period and compounded at 10%? (Future value as of the end of the fifteenth period.) d. is the present value of six receipts of $1,000 each received at the beginning of each period, discounted at 9% compounded interest?