B-7. Calculate the future value of $4,000 per year investment (ordinary annuity) ten years from now if the annual rate of return is: (2 pts each) a. 4% b. 6%c. 10% B-7a. Explain why are results for C is greater than B is greater than A B-8. Calculate the future value of $4,000 per year investment (ordinary annuity) twenty years from now if the annual rate of return is: a. 4% b. 6%c. 10% B-9. Explain why are all of the results for B8 are greater than their corresponding letter results for B7 even though the rate of returns are the same. (4pts) B.10 Find the present value of a ten-year ordinary annuity of $5,000, using the following discount rates: (2 pts each) a. 5% b. 8% c. 12% B-10a. Explain why are results for C is less than B is less than A