(Future value of an annuity) Find the future value at the end of Year 10 of an annuity that pays $1,000 per year for 10 years compounded annually at 10 percent. What would be the future value of this annuity if it were compounded annually at 15 percent? 6-29. 6-30. (Present value of an annuity due) Determine the present value of an annuity due of $1,000 per year for 10 years discounted back to the present at an annual rate of 10 percent. What would be the present value of this annuity due if it were discounted at an annual rate of 15 percent? 6-31. (Present value of an annuity) Determine the present value of an ordinary annuity of S1,000 per year for 10 years, assuming it earns 10 percent. Assume that the first cash flow from the annuity comes at the end of Year 8 and the final payment at the end of Year 17That is, no payments are made on the annuity at the end of Years 1 through 7. Instead, annual payments are made at the end of Years 8 through 17