(Bond valuation relationships) A bond of Visador Corporation pays $90 in annual interest, with a $1,000 par value. The bonds mature in 18 years. The market's required yield to maturity on a comparable-risk bond is 8.5 percent. a. Calculate the value of the bond. b. How does the value change if the market's required yield to maturity on a comparable-risk bond (i) increases to 13 percent or (ii) decreases to 4 percent? c. Interpret your finding in parts a and b. a. What is the value of the bond if the market's required yield to maturity on a comparable-risk bond is 8.5 percent? $ (Round to the nearest cent.)