5. Macey is a Disney adult and faces a constant marginal cost of going to Disney World ($5,000 per trip).
a. At what point will Macey no longer go to Disney World? (10 points)
b. Assuming Macey is rational, when will she make this decision? (10 points)
c. If Macey values her time at a constant $3 per minute, how much would she be willing to pay for a Genie Pass (a fast pass to skip the line) when the line to her favorite ride is 40 minutes long? (10 points)