If the reserve ratio is 100-percent, then a new deposit of $1000 into a bank account a. eventually increases the money supply by $1000. b. leaves the size of the money supply unchanged. c. eventually decreases the size of the money supply by $1000. d. eventually increases the money supply by $2000

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.