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Suppose a monopolist's prot-maximizing output is 500 units per week and that the rm sells its output at a price of $50 per unit. The firm has total costs of $7,000 per week. Assume the monopolist is maximizing its profit and earns $35 per unit from the sale of the last unit produced each week. Instructions: Enter your answers as a whole number. a. What are the rm's weekly economic profits? $:| b. What is the rm's marginal cost? $:| c. What is the rm's average total cost? $|:|