How do I solve these questions on a step by step basis?

d 12. Which of the following is (are) correct concerning the yield-to-maturity (YTM)? I. The YTM is greater than the coupon rate for a discount bond. 11, The YTM is less than the coupon rate when the coupon rate is 7% and the market rate is 6%. III. The YTM is equal to the coupon rate when a bond sells at par value IV. The YTM is greater than the coupon rate for a bond selling at a premium. a. I and III only b. I and IV only c. II and III only d. I, II, and I only e. IIII, and IV only Koji invested $3,300 at 7.75% interest. After a period of time he withdrew $9,383.31 How long did Koji have his money invested? 13. a. 13 years b. 14 years c. 15 years d. 16 e. 17 years years c. 14. You just acquired a mortgage in the amount of $249,500 at 6.75 percent interest, compounded monthly. Equal payments are to be made at the end of each month for thirty years. How much of the first loan payment is interest? a. $925.20 b. $1,206.16 c. $1,403.44 d. $1,511.21 e. $1,548.60 b. 15. Six years ago, Marti invested $3,500 in an account. No other investments or b. c. d. e. withdrawals have been made. Today the account is worth $7,403.16. What rate of return has Marti earned thus far? 12.86% 13.30% 15.96% 18.58% 19.20% A given rate is quoted as 12% APR, but has an EAR of 12.55%. What is the rate of compounding during the year? 16. a. Monthly b. Quarterly c. Semi-annually d. Annually e. Continuous