In the long run, monopolistically competitive firms make zero economic profits because of government regulations

If a 5 percent increase in price results in a 3 percent increase in the quantity supplied, the elasticity of supply is

A) 0.30. B) 0.60. C) 1.20. D) 1.66.

Keynes thought that one macroeconomic problem is that an economy: a. can tend toward an equilibrium level of output that is below the potential level

b. will move back to its potential after a business cycle on its own. c. always operates at the potential and business cycles are created by government intervention. d. can be pushed below the equilibrium level of output by fiscal policy. e. can be pushed away from the potential if prices and wages are flexible.