Refer to the data. The average fixed cost of producing 3 units of output is:

The hypothesis that changes in the money supply lead to proportional changes in the price level is called

A) the equation of exchange. B) the Keynesian multiplier. C) the theory of empirical relativity. D) the quantity theory of money and prices.

In the circular-flow diagram,

a. firms own the factors of production. b. the factors of production are labor, land, and capital. c. the factors of production are also called "output.". d. All of the above are correct.