What information is necessary to calculate the after-tax return on investment (ROI)? A.
whether the capital gains are long term or short term and the dividends are qualified or nonqualified
B.
whether the capital gains are long term or short term and which company paid the dividends
C.
whether the capital gains are from the sale of a stock or a bond
D.
whether the investment was purchased individually or through a brokerage firm

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.