=+1. For each of the “how much” decisions listed in Table 9-3, describe the nature of the marginal cost and of the marginal benefit. 2. Suppose that Alexa’s school charges a fixed fee of $70,000 for four years of schooling. If Alexa drops out before she finishes those four years, she still has to pay the $70,000. Alexa’ total cost for different years of schooling is now given by