Barney and Betty got divorced in 2018. In the divorce decree Betty agreed to pay Barney $24,000 per year for five years (or until Barney's death or remarriage) and $10,000 per year until their daughter, Pebbles, turns 19 years old. What amount (if any) is included in Barney's gross income in 2019

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.