For a rm with total cost function C(qi) = 20 1 20 q3 i 1 2 q2 i 2qi; (a) Find the rm's supply curve/function. (b) If the rm faces a price of $7, how many units will the rm produce? What is the rm's pro t and producer surplus? (c) Find the market supply curve/function if there are 20 identical rms in the market