Suppose a gas station has a demand function D(p) = 100p 2 1200p 3600 where p is the price per gallon and D(p) is the number of gallons the gas station can expect to sell in a given day. The function D(p) will have domain [0, 6]. Note, demand curves in economics are often graphed with the demand on the x-axis and price on the y axis (this is not important for the problem)