Carl and Nancy Johnson prepared a household budget in an attempt to manage their money better. As part of their budgeting process, Carl and Nancy prepared the following list: Monthly Income (after taxes) = $4,500; Monthly Expenses (Necessities), which include Rent: $550, Auto Loan: $250, Student Loan: $200, Savings: $500, Food: $200; Total Monthly Expenses = $1,700; Amount Left Over = $2,800. After totaling their necessary expenses, which equals $1,700, Carl and Nancy subtracted that amount from their monthly income of $4,500. The Johnsons were happy to realize that they had $2,800 left over, which is their .