Suppose your expenses for this term are as follows: tuition: $12,000, room and board:  $6,500, books and other educational supplies:  $1,500. Further, during the term, you can only work part-time and earn  $3,500 instead of your full-time salary of  $14,000. What is the opportunity cost of going to college this term, assuming that your room and board expenses would be the same even if you did not go to college?