While most industrial categories have experienced a decline in the percentage of workers unionized, which one of the following categories has seen a significant increase in unionization?

The air travel market, which is dominated by a few large firms, is an example of

A) a monopoly market. B) an oligopolistic market. C) a perfectly competitive market. D) a monopolistically competitive market.

Tom spends all his income on comics and cola and maximizes his total utility. If the price of a comic is $4 and the price of a can of cola is $1, then the ratio of the ________ is 4

A) marginal utility from cola to the marginal utility from comics B) marginal utility from comics to the marginal utility from cola C) number of comics Tom buys to the number of cola Tom buys D) total utility from comics to the total utility from cola