You observe that grocery shoppers choose the shortest line at the checkout. This is an example of _____

Ricky is in a consumer equilibrium. Given the prices of goods, Ricky has allocated all his income such that his marginal utility per dollar spent is ________ for ________ goods

A) as small as possible; all B) equal; all C) equal; normal D) maximized; all

The law of increasing additional cost is due to

A) scarcity. B) inefficient use of technology. C) the fact that resources are not perfectly adaptable for alternative uses. D) the fact that there are always alternatives and it is costly to figure out which alternative is best.