1. The problem statement, all variables and given/known data Before the AP exam Cal Q Luss has 3 hours to cram: during this time, he wants to memorize a set of 60 derivative/integral formulas. According to psychologists, the rate at which a person can memorize a set of facts is proportional to the number of facts remaining to be memorized . Thus if he memorizes y facts in t minutes, the model would be: dy/dt = k(60-y) where k is a positive constant Initially, Cal knows no facts. A. Write an equation for y as a function of t. B. If he memorizes 15 formulas in the first twenty minutes, how many facts will he memorize in: a. 1 hour b. 3 hours 2. Relevant equations I'm guessing A=Pe^rt? 3. The attempt at a solution I did seperation of variables and I got that Code (Text): -y-60=e^kt but I don't know what to do after that.