Based on the best econometric estimates, the market elasticity of demand for your firm's product is -1.5. The marginal cost of producing the product is constant at $250, while average total cost at current production levels is $340.

Determine your optimal per unit price if:

You are a monopolist

You compete against one other firm in a cournot oligopoly

You compete against 19 other firms in a cournot oligopoly