Suppose that each firm in a competitive industry has the following costs where is an individual firm

Suppose that each firm in a competitive industry has the following costs:
where
is an individual firm's quantity produced. The market demand curve for this product is
where
is the price and
is the total quantity of the good. Currently, there are 9 firms in the market.
a. What is each firm's fixed cost? What is its variable cost? Give the equation for average total cost.
b. Graph average-total-cost curve and the marginal-cost curve for
from 5 to 15. At
what quantity is average-total-cost curve at its minimum? What is marginal cost and average
total cost at that quantity?
c. Give the equation for each firm's supply curve.
d. Give the equation for the market supply curve for the short run in which the number of firms is fixed.
e. What is the equilibrium price and quantity for this market in the short run?
f. In this equilibrium, how much does each firm produce? Calculate each firm's profit or loss. Is there incentive for firms to enter or exit?
g. In the long run with free entry and exit, what is the equilibrium price and quantity in this market?
h. In this long-run equilibrium, how much does each firm produce? How many firms are in the
market?

[nadine.nguyen]

1:38 how do you compute the number 12.5, 10, and 10.8