Janie spends 10 hours per week making flower arrangements. yesterday she was offered an after-school job by the pet store in the mall which, she often visits to look at the animals. if she took this job working ten hours a week, she could make $2,500 per year. she has $800 invested in her flowers, and she could have that money earning interest at one percent per year in a savings account. what is janie's total opportunity cost of staying in business for herself this year?