3. Suppose that RainbowBoy Manufacturing sold an issue of bonds with a 9 year maturity, a $750 par value, a 8.5% coupon rate, and semiannual interest payments. a. 3 years after the bond was issued, the going rate of interest on bonds such as these fell to 4%. At what price would these bonds sell? b. Suppose that 3 years after the initial offering, the going interest rate had risen to 19%. At what price do these bonds sell