The difference between the price effect and the output effect

1-Explain the difference between the price effect and the output effect when a new firm enters a market.

2-Lola is the owner of a bakery that earns 0 (zero) economic profit. Last year, her total revenue was $165,000, her rent was $10,000, her labor costs were $85,000, and her overhead expenses were $11,000.

  1. What were Lola’s total explicit costs?
  2. What were Lola’s total implicit costs?
  3. Currently, Lola has 8 employees; with 8 employees, her bakery can produce 12 wedding cakes per day. If she hired a ninth employee, she’d be able to produce 16 wedding cakes per day. What is the marginal product, in terms of wedding cakes, of the ninth employee?