18. Number of Total Utility of Marginal Utility of Bags of Total Utility Marginal Utility Cheeseburgers Cheeseburgers Cheeseburgers French of French of French Fries Fries Fries 0 0 - 0 0 - 1 20 20 1 10 10 2 36 16 2 18 8 3 48 12 3 20 2 4 56 8 4 20 0 5 60 4 5 - - If the price of a cheeseburger is $2, the price of a bag of french fries is $1, and you have $6 to spend (and you spend all of it 2' what is the utility-maximizing combination of cheeseburgers nothing and french fries I nothing ? Suppose that the price of cheeseburgers falls to $1. What is the utility-maximizing combination of cheeseburgers nothing and french fries I nothing