Final answer:
To determine if Eryn's legal practice would be profitable, we need to calculate implicit costs and compare them to the revenue. Without more information, we cannot determine the profitability.
Step-by-step explanation:
To determine whether Eryn's legal practice would be profitable, we need to consider implicit costs. Implicit costs are the opportunity costs of using resources in a particular way. In this case, the implicit costs would be the foregone salary Eryn would receive if she continued working at the corporate law firm.
To calculate the implicit costs, we subtract the explicit costs from the revenue. The explicit costs in this case would be the office rental and the law clerk's salary. If the revenue is higher than the explicit and implicit costs, then Eryn's legal practice would be profitable. Otherwise, it would not.
If the revenue of $200,000 is higher than the explicit costs of $85,000 (office rental + law clerk's salary), then Eryn's legal practice would be profitable. However, without more information about the implicit costs, we cannot determine whether it would actually be profitable.