Figure10-1Cassie’s Total Utility and Marginal Utility Panel (a) shows how Cassie’s total utility depends on her consumption of chicken wings. It increases until it reaches its maximum utility level of 64 utils at 8 wings consumed and decreases after that. Marginal utility is calculated in the table. Panel (b) shows the marginal utility curve, which slopes downward due to diminishing marginal utility. That is, each additional wing gives Cassie less utility than the previous wing.