Problem
Many amusement parks offer two-day passes at dramatically discounted prices. If a one-day pass costs $40 but the two-day pass costs $50, what is the average cost for the two-day pass? What is the marginal cost of the two day pass?
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.