Calculate the yield to maturity for a corporate bond issued by DaimlerChrisler with the price of $ 800.20, where the bond has a maturity of 11 years, a face value of $ 1000, and the annual interest payment is 70%. Assume that interest payments are made annually at the end of each year. What is the future value of the corporate bond?

a) Should the interest rate decrease to 3%, how many years does the bond take to mature?

b) If the interest rate increases to 7%, what should be the annual interest payment for the bond to be sold at thesame price of $ 800.20?