A group of buyers and sellers with the potential to trade with each other is known as a(n)

Perfectly competitive markets tend to have a ______ number of sellers and a(n) ______ entry.

a. large; easy b. large; difficult c. small; easy d. small; difficult

In the Keynesian view, a reduction in the marginal income tax rate would cause

a. output to rise and the price level to fall. b. both output and the price level to rise. c. output to rise with the price level unchanged. d. the price level to rise with output unchanged.