2. [3 Marks] At George Howell Coffee, you can add a pound of Kirinyaga coffee to any order for $20. They sell 3 pounds for $55 and 5 pounds for $85. You purchased 5 pounds. What is the marginal cost of the fifth pound of coffee? A. $5. B. $10. C. $15. D. $17. E. $20. (2) [5 Marks] Assume each 1-mark improvement in your ECO101 final grade is worth $100. No matter how many hours you study, your final marks will be higher if you purchase The Method than if you do not purchase the method. TFU: If you purchase the method, you rationally study fewer hours. (3) [5 Marks] At a per-ride price of $2, Victoria takes 50 public transportation rides per month. She then realizes that she can buy a monthly pass enabling her to take as many rides as she wants in a month without paying any extra money. TFU: If the price of the monthly pass is $125, Victoria should not purchase a monthly pass