An industry has two firms that sell an identical good and the industry faces an inverse demand curve given by p(q)=10000-12Q, where Q=q1+q2. Determine the Nash equilibrium as well as the selling price based on the Cournot model. Suppose that firms one and two have the cost functions C1(q1)=q1+5 and C2(q2)=2q2+4, respectively.