Supposea monopolist's profit-maximizing output is 200 units per week andthat the firmsells its output at a price of $60 per unit. The firm has total costsof $9,000 per week.Assume the monopolist is maximizing its profit and earns $30 per unit from the sale of the last unit produced each week.

a.What are thefirm's weekly economic profits?

b. Whatis the firm's marginal cost?

c. Whatis the firm's average total cost?