The U.S. and the Canadian currencies are the only two in the world that are called "dollars."

In the economic way of thinking, a productive service is

A) a meritorious service. B) something of clear value to anybody in society. C) an activity that enables people to obtain something for which they are willing to pay. D) all of the above. E) none of the above.

An increase in the price of a firm's output increases the firm's demand for labor because the

A) marginal product of each worker increases. B) value of marginal product of each worker increases. C) value of marginal product curve becomes steeper. D) value of marginal product curve becomes flatter.