You are the manager of a firm that charges customers $16 per unit for the first unit purchased, and $12 per unit for each additional unit purchased in excess of one unit. The accompanying graph summarizes your relevant demand and costs.

a. What is the economic term for your firm's pricing strategy?

b. Determine the profits you earn from this strategy.

Price 20 18 16 - 14 - 12 10 - MC=AC 8 6 - D 4- 2- 0 1