I need help in these qudstikns

3.920 2.170 2. Interpreting Bond Yields (LO2) Suppose you buy a 7% coupon, 20-year bond today when it's first issued. If interest rates suddenly rise to 15%, what happens to the value of your bond? Why? 5. Coupon Rates (LO2) Goldstream Enterprises has bonds on the market making annual payments, with nine years to maturity, and selling for $948. At this price, the bonds yield 3.9%. What must the coupon rate be on the bonds? * 9. Calculating Real Rates of Return (LOG) If Treasury bills are currently paying 6% and the inflation rate is 2.6%. what is the approximate real rate of interest? The exact real rate? 20. Bond Yields (LO2) Airbutus Co. wants to issue new 20-year bonds for some much needed expansion projects. The company currently has 8% coupon bonds on the market that sell for $930, make semiannual payments, and mature in 20 years. What coupon rate should the company set on its new bonds if it wants them to sell at par? 23. Finding the Bond Maturity (LO2) Colwood Corp. has 8% coupon bonds making annual payments with a YTM of 7.2%, current market value of $1,059.6. How many years do these bonds have left until they mature