Legislators often gain by bundling a number of projects benefiting local districts at the expense of general taxpayers together on a single bill. Such legislation is called

In perfect competition, the product of a single firm

A) has many perfect substitutes produced by other firms. B) has many perfect complements produced by other firms. C) is sold under many differing brand names. D) is sold to different customers at different prices.

The level of an economic activity should be increased to the point where the ____

a. Marginal cost=0 b. Marginal revenue=0 c. Total revenue = Total cost d. Marginal revenue – marginal cost=0