Your marginal cost is the cost of using one more hour to supply tutoring services. Would the marginal cost of your time increase if you spent more hours during the week tutoring? For example, when you are not tutoring, your marginal cost is the cost of spending your rst hour doing so. But when you already are providing eight hours of tutoring service per week, your marginal cost is the cost of spending your ninth hour doing so. Does your marginal cost rise as you spend more hours supplying tutoring services? Explain