(Bond valuation relationships) Stanley, Inc. issues 15-year $1,000 bonds that pay $85 annually. The market price for the bonds is $960. The market's required yield to maturity on a comparable-risk bond is 9 percent. a. What is the value of the bond to you? b. What happens to the value if the market's required yield to maturity on a comparable-risk bond (i) increases to 11 percent or (ii) decreases to 7 percent? c. Under which of the circumstances in part b should you purchase the bond