The average cost per item to produce q items is given by ()=0.0421.2+18,for>0. a ( q ) = 0.04 q 2 1.2 q + 18 , for q > 0. What is the total cost, () C ( q ) , of producing q goods? ()= C ( q ) = What is the minimum marginal cost? minimum MC = (Be sure you can say what the