Answer:
$3,000 per month
Explanation:
If an owner paid himself or a business paid to his owner this type of cost referred to as implicit cost.
In the case of Krista, she is an owner of a business of selling Coffee and also works at her business place as a barista and paid herself $3,000 per month.
So, $3,000 paid as a barista to her self called Implicit cost for the business.