i have no idea how to do problem 1 parts a,b & c

1 3 @ Q search 5) Amy is thinking about going to the movies tonight. A movie ticket costs $15, and she'll have to cancel a $20 dog-sitting job that she would have been willing to do for free. The opportunity to Amy cost of going to the movies is: A) $5. B) $15. C) $20. D) $35. II, Essay Questions: 1 . Joining a health club requires a $100 membership fee and $50 per month membership dues. Use this information to answer each of the following questions. Show your work. a) Calculate the average cost per month of joining the health club for 2 years. Explain. b ) Calculate the marginal cost of joining the health club after 2 years. Explain. If your reservation price for a 25" month's membership is $54, should you continue your membership for a month after 2 years? Explain. 2. Suppose you have two tests next week. You know that you will get the following scores for the two tests when you study for each test. Hours of Study 0 IN 3 5 Math 37 53 67 79 89 96 100 Economics 58 70 80 88 94 98 100 a) Calculate the marginal benefit of studying math for 1 to 6 hours. Calculate the marginal benefit of studying economics for 1 to 6 hours. b) Suppose you have allocated a total of 6 hours to study for the two tests. How many hours should you spend on studying for each test? Explain. 3. Textbook Problem: #2 on p 18, i.e., "To earn extra money in the summer, ..." Music 23 4 MacBook Air esc 20 FA F6 F8 DD E9 F10 a # o 2 3 & 4 5 O Q W. E R T Y U O P A S D F G H K Z X C V B N M <