Answer:
$12,767
Explanation:
The explicit costs of Michelle attending college is given as $4,767
The implicit costs of Michelle attending college is the opportunity cost of not working as a store clerk which means that money cannot be earned and will more or less be wasted because she is going to college: That cost is given as $8 * 1000 hours which is $8000 per semester.
Michelle's total economic cost of attending college during one semester is $12,767.