Winston Enterprises has a 15-year bond issue outstanding that pays a 9 percent coupon. The bond is currently priced at $894.60 and has a par value of $1,000. Interest is paid semiannually. What is the yield-to-maturity? Round to the nearest hundredth percent. Do not include a percent sign in your answer. (i. e. If your answer is 4.32%, then type 4.32 without a % sign)

Until recently, hamburgers at the city sports arena cost $4.70 each. the food concessionaire sold an average of 13 comma 000 hamburgers on game night. when the price was raised to $5.40, hamburger sales dropped off to an average of 6 comma 000 per night. (a) assuming a linear demand curve, find the price of a hamburger that will maximize the nightly hamburger revenue. (b) if the concessionaire had fixed costs of $1 comma 500 per night and the variable cost is $0.60 per hamburger, find the price of a hamburger that will maximize the nightly hamburger profit.