Suppose all the firms in a competitive market have the


Suppose all the firms , in a competitive market , have the following cost-function C(Q)=Q^2+B, where B is some constant.

a. What is the long-run competitive equilibrium price,P*?( P* will be a function of B)

b. If market demand is given by QD(P)=60-P, what value of B will lead there to be only one firm left in the market in the long-run competitive equilibrium( firms are price takers)?

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Macroeconomics: Suppose all the firms in a competitive market have the
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