neeed help quick

9. (a) A zero-coupon bond with 5 years remaining to maturity and $1,000 par value is sold for \$715. Compute its yield to maturity. (5 points) 9 (b) If the yield on this zero-coupon bond is 7%, calculate the interest that you will earn during the first year. ( 5 points) 9 c) If the yield on this zero-coupon bond is 7%, calculate its book value in year 2 . ( 5 points) 9 d) If the yield on this zero-coupon bond is 7%, calculate the interest that you will earn during the second year. ( 5 points)