Let us consider a company producing a good Z, on a perfectly competitive market. The expression for the total cost of this enterprise is: C(q)=72+2q2

1-What is the marginal cost of this business?

2-Calculate the break-even point for this business.

3-Calculate the closing threshold for this business.

4-Graph the marginal cost, average cost, and average variable cost curves for this firm. Your chart should be accurate. Also indicate the breakeven point (SR) and the closing point (SF).

5-If the market price is $20 per unit, indicate the level of production such that this firm's profit is maximum in the short term. Justify your calculations.

6-If the market price is $20, is the business making a profit or a loss? Also indicate the amount of profit or loss.

7-In the long term, will there be more or fewer firms? Explain.