Grohl Co. issued 27 year bonds 7 years ago at a coupon rate of 8 percent. The bonds make semiannual payments. If the YTM on these bonds is 6 percent, what is the current bond price? Enter the answer with 2 decimals (e.g. 950.45)

Bond Dave has a 6 percent coupon rate, makes semiannual payments, a 9 percent YTM, and 18 years to maturity. If interest rates suddenly rise by 2 percent, what is the percentage change in the price of Bond Dave? Enter the answer with 4 decimals (e.g. 0.0123).

You purchase a bond with an invoice price of $961. The bond has a coupon rate of 9 percent, and there are 4 months to the next semiannual coupon date. What is the clean price of the bond? Enter the answer with 2 decimals (e.g. 954.23).