Debbie is trying to decide to go to college or not. If she goes to college, she will spend $15,000 per year on her education for 4 years. Then as a college graduate, she will earn $60,000 per year for the next 35 years. If she doesn't go to college, she will earn $40,000 per year for 39 years. The interest rate is 4% per year. a. (5 points) Should Debbie go to college? b. (5 points) What is the tuition fee such that she is indifferent between going to college and not going to college?