Joanne has just completed high school and is trying to determine whether to go to junior college for two years or go directly to work. her objective is to maximize the savings she will have in the bank five years from now. if she goes directly to work, she will earn $19,500 per year for each of the next five years. if she goes to junior college, for each of the next two years she will earn nothing—indeed, she will have to borrow $6,000 each year to cover tuition and books. this loan must be repaid in full three years after graduation. if she graduates from junior college, in each of the subsequent three years, her wages will be $37,500 per year. joanne's total living expenses and taxes, excluding tuition and books, equal $15,000 per year.