Please include all necessary formulas. Thank you!

Problem 9.4: R \& J, Inc. issues a 10-year $1,000 bond that pays $28.50 semi-annually. The market price for the bond is $975. The market's required yield to maturity on a comparable-risk bond is 6 percent. a. What is the value of the bond to you?. b. What happens to the value if the market's yield to maturity on a comparable-risk bond (i) increases to 8 percent or (ii) decreases to 4 percent? c. Under which of the circumstances in parts a \& b should you purchase the bond