a. $10,000 to be received in 10 years at 8% compounded annually? __________________
b. $10,000 to be received in 10 years at 6% compounded annually? __________________
c. $10,000 to be received in 15 years at 8% compounded annually___________________
d. $10,000 to be received in 15 years at 6% compounded annually? __________________