Charles is a recent college graduate. He is paying rent for the first time, as well as utility bills, such as cable, electric, and telephone. He also has some hefty school loan payments. Charles has a good paying job and knows that even though he has lots of expenses, it is critical for him to save money each month, too. He decides to create a budget for himself in Excel 2010.
Charles wants to add color only to those cells with a negative balance. He would accomplish this by using ___ formatting.