Jane purchases snickle-dees only because her friends do. This is

The host at a party offers Justin a sixth beer. Justin says, “No thanks, man. The marginal utility of that fifth beer was, like, 20 cents, but the marginal utility of the sixth would be minus 10 cents.” If Justin consumes the sixth beer, his total utility will

A. rise by 10 cents. B. reach a plateau and remain constant. C. fall by 10 cents. D. fall below his marginal utility.

The optimal number of units to produce is best expressed when

A. marginal benefit exceeds marginal cost. B. marginal cost exceeds marginal benefit. C. marginal benefit and marginal cost are close to equal. D. marginal benefit and marginal cost are equal to zero.