hi please i need help on this two questions, the professor gave us that answers you see on the paper but i do not know how to do them.

9. On January 1, 2018, bonds with a face value of $72.000 were sold. The bonds mature on January 1, 2028. The face interest rate is 6%. The bonds pay interest semiannually on July 1 and January 1. The market rate of interest is 10%. What is the market price of the bonds on January 1, 2018? The present value of $1 for 20 periods at 5% is 0.371. The present value of an ordinary annuity of $1 for 20 periods at 5% is 12.462. The present value of $1 for 20 periods at 3% is 0.554. The present value of an ordinary annuity of S1 for 20 periods at 3% is 14.878. (Round your final answer to the nearest dollar.) A. $54,062 B. $74,160 Explanation : C. $72,024 0. 172 D. $72,000 - $54 062 10. You are calculating the present value of $15,000 that you will receive at the end of every year for the next ten years. Which table will you use to obtain the present value of those $15,000 payments you will be receiving? A. Present Value of $1 table B. Future Value of $1 table C. Present Value of Ordinary Annuity of $1 table D. Future Value of Ordinary Annuity of $1 table $12.000 * 0.577) + (72 000 * 3% * 12.462