Price and Cost (dollars) Quantity Refer to Exhibit 8-7. At the profit-maximizing output level, the firm's total revenue is O a. 560.00. O b. 5360.00. O C. $300.00. O d. 5225.00. QUESTION 73 Exhibit 8-7 Price and Cost (dollar-) Quantity Refer to Exhibit 8-7. The firm is O a. earning negative economic profits, i.e., losses. O b. earning positive economic profits. O c. just breaking even. O d. This cannot be determined without the average variable cost curve