Suppose May needed 3 gallons of milk. If she wants to spend the least amount of money, using any combination of the three sizes above, how much will she spend? Prove that you methods guarantees Maya will spend the least amount of money.
One set of 2 gallons and 2 sets of 1/2 gallon. this will make Maya pay $10.16, while any other combination would make her pay more. For Example: 2 gallons and 1 gallon would cost $10.23
