Given: (x is number of items) Demand function: d(x) = 1040.4 - 0.3x2 Supply function: s(x) = 0.6x2 Find the equilibrium quantity: Find the producers surplus at the equilibrium quantity: Given: (x is number of items) Demand function: d(x) = 990 - 0.622 Supply function: s(x) = 0.5x2 Find the equilibrium quantity: Find the consumers surplus at the equilibrium quantity