In a competitive market, the long-run demand is given by

P = 20 - Q/100

Firms in the industry have as their cost structure the expression

C = q³- 5q²+ 10q

Determine:

(a) equilibrium price and quantity produced-sold of the firm.

c) What quantity is traded in the market?

d) Over what time period does this market work?

e) How many companies are working in the market?

e) What is the profit of the individual firm?

f) What will be the behavior of the individual firm, will it exit or stay in the market?