suppose your expenses for this term are as follows: tuition: $9,000, room and board: $1,500, books and other educational supplies: $1,000. further, during the term, you can only work part-time and earn $3,000 instead of your full-time salary of $8,000. 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?