please solve thses difficult questions of micro econiomics

1. Describe, and show by graph, the relationship between marginal cost and average cost. 2. Under what conditions should a competitive rm shut down in the short run? Also show it in a graph. 3. How does the demand curve for monopolist rm differ from the demand curves for rms in competitive market structures? Show it by graphs. 4. The diagram below shows supply and demand in a perfectly competitive local market for cubic metres (m3) of garden soil. 60 $5 .\\' 50 45 4o 35 10 Price I5 per m3] 25 2.0 15 IO 5 D 10 20 .10 40 50 60 70 R0 90100110120 Quantity [m' per day] a. At the equilibrium market price, determine the following values: -total revenue received by sellers - consumer surplus - producer surplus -total economic surplus b. Now suppose that sellers in this market cooperate and restrict their total output to 30m3 per day. At the resulting price of $45 per m3,m3, determine each of the same values as in part (a). c. What is the change in consumer surplus when output is restricted? What is the change in producer surplus? d. What is the deadweight loss to the economy in this market when output is restricted? Show the area of this loss in the diagram