When a monopolistically competitive firm breaks even in the long run, this is equivalent to earning a zero accounting profit

In the circular flow model, the source of the factors of production used to create goods and services is the

a. product market b. resource market c. firms d. households e. exchange market

Economic analysis requires us to combine:

A. unlimited resources with limited wants. B. theory with observations. C. developed and developing nations. D. republicans and democrats.