3) Suppose the consumer is indifferent between the packaging they buy cereal in, and only care about the amount of cereal they purchase (perfect substitutes). X represents 48 oz. packages of cereal and Y represents 16 oz. packages of cereal. = a) What is an example of a utility function for the consumer? b) Graphically depict the consumer's optimal consumption bundle (include both the indifference curve and budget constraint) if Px = 10, Py = 4, and I = 60.4