a 30-year maturity bond with face value of $1,000 makes semiannual coupon payments and has a coupon rate of 8.80%. (do not round intermediate calculations. enter your answers as a percent rounded to 3 decimal places.) a. what is the yield to maturity if the bond is selling for $1,030? b. what is the yield to maturity if the bond is selling for $1,000? c. what is the yield to maturity if the bond is selling for $1,140?