The dollar price for a barrel of oil sold at a certain oil refinery tends to follow the demand equation below, where xx is the number of barrels of oil on hand
(in millions).
a) How much should be charged for a barrel of oil if there are 22 million barrels on
hand?
b) What quantity xx will maximize revenue?
c) What price should be charged in order to maximize revenue?
p=-1/10x+80
