The manager of a local monopoly estimates that the elasticity of demand for its product is constant and equal to -3. The firm’s marginal cost is constant at $35 per unit. a. Express the firm’s marginal revenue as a function of its price. Instruction: Enter your response rounded to two decimal places. MR = × P b. Determine the profit-maximizing price. Instruction: Use the rounded value calculated above and round your response to two decimal places. $