You have been working too many hours at your part-time job (which pays $15 per hour), and your Economics marks are suffering. Your parents, want you to do better in school but recognized your desire for cash, offers you this deal. For every 1-percent increase in your mark on the next test, they will pay you $9. You estimate that one additional hour of studying will raise your mark 7%; a second hour of studying will raise your mark 5 percent; a third hour, 4 percent; a fourth hour, 3 percent; and a fifth hour, 1 percent. a) If all you are trying to do is make the most money, how many hours should you study? b) How will change your answer, if your boss gets desperate and offers to pay $16 an hour