Suppose that the domestic demand and supply for hats in a small open economy are given by:
Q = 80 - 2P (demand)
Q = 20 + 2P (supply)
Where Q denotes quantity and P denotes price.
After the quota of 18 units is imposed, how has domestic welfare been affected? (Assume all quota rents go to domestic producers and calculate a value for the change in welfare between the free trade outcome and the quota outcome). . You do not need to show a graph for this part.