A supplier of kerosene has a 150-gallon tank that is filled at the beginning of each week. His weekly demand shows a relative frequency behavior that increases steadily up to 100 gallons and then levels off between 100 and 150 gallons. If Ydenotes weekly demand in hundreds of gallons, the relative frequency of demand can be modeled by f (y) = ly, 1, 0, 0 < y < 1, 1
a. Find F(y).

b. Find P(0
c. Find P(.5 ILT C 1.2).