Please solve with RStudio solutions. Questions 13-15

- Questlon 13: What is the yield to maturity (YLM) of a fixed payment loan with yearly fixed payments of 32,000 USD and a time to maturity of 18 years sold at 488,290 USD? - Question 14: What is the yield to maturity (YTM) of a 8.5% annual coupon bond with free value 103,000 USD and a time to maturity of 89 years sold at 49,440 USD? - Question 15: Calculate one-year returns (IR) over 9 years of a 6.5% annual coupon bond with face value 149,000 USD and initial time to maturity of 11 years. The initial interest rate is 18.60%, but it changes to 18.30%,16.90%,17.70%,15.30%,18.40%,20.00%,15.00%,17.90%, and 15.80% afler 1,2,3, 4,5,6,7,8, and 9 years