A line that slopes downward from left to right has a positive slope

The paradox of value refers to the fact that

A) different consumers value the same items differently. B) the value of a good depends on its total utility. C) water costs little, while diamonds cost a lot. D) water brings little consumer surplus.

In a long-run equilibrium in a perfectly competitive market, firms are selling at a price equal to marginal cost.

Answer the following statement true (T) or false (F)