monopolist’s profit-maximizing output is 500 units per week and it sells its output at a price of $70 per unit. The firm’s total costs are $15,000 per week. The firm is maximizing its profit, and it...

monopolist’s profit-maximizing output is 500 units per week and it sells its output at a price of $70 per unit. The firm’s total costs are $15,000 per week. The firm is maximizing its profit, and it earns $40 in extra revenue from the sale of the last unit produced each week. a. What are the firm's weekly economic profits?