Suppose there are two firms competing in a market. both firms produce identical products. firm one is an efficient firm and has total cost function c₁=5q₁; firm two is a less efficient firm and has total cost function c₂=10q₂ . market demand for this product is given by q=150-2p. if two firms compete in quantities of production, find out the best response function of each firm and the equilibrium output level of each firm.