A dairy company gets milk from two dairies and then blends the milk to get the desired amount of butterfat. Milk from Dairy I costs $2.40 per gallon, and milk from Dairy II costs $0.80 per gallon. At most $144 is available for purchasing milk. Dairy I can supply at most 55 gallons averaging 3.9% butterfat, and Dairy II can supply at most 90 gallons averaging 2.9% butterfat. Answer parts a and b