please answer all parts

Suppose Ford sold an issue of bonds with a 14-year maturity, a $1400 par value, a 10% coupon rate, and semiannual interest payments. (a) Two years after the bonds were issued, the going rate of interest on bonds such as these fell to 7%. At what price would the bonds sell? Sell price = $ (keep 2 decimal places) (b) Suppose that, two years after the bonds' issue, the going interest rate had risen to 14%. At what price would the bonds sell? Sell price = $ (keep 2 decimal places) (c) Today, the closing price of the bond is $783.58 What is the current yield? Current yield (annually) =