Suppose a tax of $5 per unit is imposed on a good. The supply curve is a typical upward-sloping straight line, and the demand curve is a typical downward-sloping straight line. The tax decreases consumer surplus by $10,000 and decreases producer surplus by $15,000 . The deadweight loss of the tax is $2,500 . The tax decreased the equilibrium quantity of the good from

Which of the following statements is (are) correct? In the classical system,

a. aggregate demand is the primary determinate of the natural rate of output and employment. b. both output and employment are self-adjusting towards the natural rates of output and employment. c. changes in aggregate supply drives changes in output in the short-run and in the long-run. d. only output is self-adjusting to the supply-determined full-employment levels.

A decrease in equilibrium price and an increase in equilibrium quantity could be brought about by a(n)

a. increase in demand b. decrease in demand c. increase in resource prices d. improvement in production technology e. favorable shift in tastes and preferences