What is the profit-maximizing price & quantity combination? How do you know it?

What can you say about the relationship between the equilibrium price, and marginal cost and marginal revenue? What does this imply in terms of competition in this market?

Which areas in the graph represent producer and consumer surplus in this market?

10,000 Marginal cost E Isoprofit curve: P* = $5,440 $150,000 Price, marginal cost ($) Isoprofit curve: $63,360 Demand curve O 10 20 Q* = 32 120 Quantity of cars