Final answer:
The average total cost of the 6th unit is $52. Diminishing marginal returns begin at the 3rd unit of output. Profit or loss can be determined by comparing total revenue and total cost. Tunica would operate in the short run, but whether it stays in the market in the long run depends on its profitability.
Step-by-step explanation:
In order to determine the average total cost of the 6th unit, we need to calculate the total cost and then divide it by the number of units. From the given table, the total cost of the 6th unit is $300. Since the firm's fixed cost is $12 and the 6th unit incurs a total cost of $300, the average total cost of the 6th unit can be calculated as:
Average Total Cost = (Fixed Cost + Total Variable Cost) / Number of Units
Average Total Cost = ($12 + $300) / 6 = $52
To find the first unit of output where diminishing marginal returns have begun, we can observe the total variable cost. In this case, diminishing marginal returns start at the 3rd unit of output because the total variable cost increases significantly from $25 to $60 between the 2nd and 3rd units.
Profit or loss can be determined by subtracting the total cost from the total revenue. To find the profit-maximizing output level, we need to compare the marginal revenue and marginal cost.
Tunica would operate in the short run because its total revenue exceeds its variable costs, allowing it to cover its variable costs and make a contribution towards its fixed costs.
Whether Tunica would stay in the market in the long run depends on its profitability. If it is earning economic profits in the short run, it would continue operating in the long run. However, if it is experiencing losses in the short run, it may need to exit the market in the long run.