Suppose that you are a producer of anti-aging cream in a monopolistically competitive industry. This industry is monopolistically competitive because each producer uses a unique formula and protects it as a top secret; further, each product has its own brand name. The demand for your brand of cream is described by equation P = 200-2Q and the marginal revenue function is MR = 200 - 4Q. Assume the marginal cost of producing each unit of output is $4, and fixed costs are $1,000.