I need help with these three :)

D Question 7 1 pt A firm in a competitive market has the following cost structure: Table 14-7 Output Total Marginal Marginal Cost $5 Quantity Cost Revenue 12 $5 $9 $10 13 $6 $9 WN P $12 $15 14 $7 $9 15 $8 $9 4 $24 $9 $9 15 16 $40 17 $10 $9 If the market price is $4, this firm will (hint: there are two parts to this problem. First you need to calculate the missing variables to Refer to Table 14-7. If the firm wants to maximize profit, how many units should it produce? determine how many units the firm will produce. Then, at the level of output, you need to see if the firm is making or losing money.) O 12 O produce two units in the short run and exit in the long run. 13 produce three units in the short run and exit in the long run. 0 17 produce four units in the short run and exit in the long run. 0 16 shut down in the short run and exit in the long run. Question 8 1 pts Scenario 14-1 Assume a certain firm is producing Q = 1,000 units of output. At Q = 1,000, the firm's marginal cost equals $15 and its average total cost equals $11. The firm sells its output for $12 per unit. Refer to Scenario 14-1. To maximize its profit, the firm should (hint: there are two parts to this problem. The first part is asking about the quantity and the second part is asking about the profit per unit.) increase its output. continue to produce 1,000 units. O decrease its output but continue to produce. O shut down. Question 9 1 pts