The economist Joseph Schumpeter argued that industrial concentration, in which a relatively small number of firms control the market place, actually ________ the rate of ________.

The law of increasing costs holds that the opportunity cost:

a. of a good decreases as the quantity of the good produced increases. b. of a good is proportional to the resources used in its production. c. of a good increases as more of the good is produced. d. of a good does not change with the resources used its production. e. changes as more of the good is produced.

A tax system that applies a lower marginal tax rate at higher levels of income is

A) progressive. B) regressive. C) proportional. D) flat.