Suppose a perfectly competitive industry has 20 firms, all of which have the same short-run total cost function ST C(q) = 16 + q² . The market demand curve is QD = 110 P.

a) How is the formulation for AVC; b) What is the lowest level of AVC; c) What is the condition of the company's short-term supply; d) Determine the short-run equilibrium price and quantity in the industry.

I get for formulation AVC= TVC/Q, TVC=Q²