solve these please, thanks

Question 17 ( 2 points). M\&M Corp. has 8% coupon bonds on the market with 20 years to maturity. The bonds make semi-annual payments and currently sell for 107% of par. What is the YTM? What is the effective annual yield? Question 18 (2 points). Delta Corp. has bonds on the market with 15.5 years to maturity, a YTM of 7\%, and a current price of $1,045. The bonds make semi-annual payments. What must the coupon rate be on these bonds