please answer a and b. thank you!

Suppose a 10-year, $1,000 bond with a 12% coupon rate and semiannual coupons is trading for a price of $1,064.37. a. What is the bond's yield to maturity (expressed as an APR with semiannual compounding)? b. If the bond's yield to maturity changes to 9% APR, what will the bond's price be? a. What is the bond's yield to maturity (expressed as an APR with semiannual compounding)? The YTM is % (Round to two decimal places.)