10. Calculate the present value of the compound interest loan. (Round your answers to the nearest cent.) $21,000 after 7 years at 3% if the interest is compounded in the following ways. (a) annually ? (b) quarterly?

22. In the following ordinary annuity, the interest is compounded with each payment, and the payment is made at the end of the compounding period. Find the required payment for the sinking fund. (Round your answer to the nearest cent.) Yearly deposits earning 12.3% to accumulate $3500 after 12 years

23. In the following ordinary annuity, the interest is compounded with each payment, and the payment is made at the end of the compounding period. Find the amount of time needed for the sinking fund to reach the given accumulated amount. (Round your answer to two decimal places.) $245 monthly at 5.9% to accumulate $25,000.

25. In the following ordinary annuity, the interest is compounded with each payment, and the payment is made at the end of the compounding period. How much must you invest each month in a mutual fund yielding 14.5% compounded monthly to become a millionaire in 10 years? (Round your answer to the nearest cent.)

31. Find the unpaid balance on the debt. (Round your answer to the nearest cent.) After 6 years of monthly payments on $150,000 at 4% for 25 years.

34.A MasterCard statement shows a balance of $560 at 13.1% compounded monthly. What monthly payment will pay off this debt in 1 year 2 months? (Round your answer to the nearest cent.)