Calculate the future value of $1,000 in A. 4 years at an interest rate of 10% per year? B. 8 years at an interest rate of 10%per year? C. 4 years at

Calculate the future value of $1,000 in

A. 4 years at an interest rate of 10% per year?

B. 8 years at an interest rate of 10%per year?

C. 4 years at an interest rate of 20% per year?

D. Why is the amount of interest earned in Part (a) less than half the amount of interest in part(b). Round answers to nearest dollar.