A rational individual will never consume a unit of a good if its
marginal utility is less than average utility.
marginal utility is negative.
marginal utility is increasing.
marginal utility is diminishing.
The price of a hamburger is $1, and the price of a movie is $6. The consumer has purchased 2
hamburgers and 2 movies, and her marginal utility from the second hamburger is 20 and from the
second movie is 120. The consumer has an income of $21. This combination of goods
maximizes utility because the marginal utility of the last dollar spent on each good is the
same, but it is not an equilibrium because marginal utility is not zero.
maximizes utility and is an optimum because the marginal utility of the last dollar spent on
each good is the same.
is not an optimum because the consumer has not spent all of her money.
is not an optimum because the marginal utility of the last dollar spent on each good is not the
same.
Holding all other prices and money income constant, if the price of food rises, then the consumer
will adjust her expenditures and
reach an optimum on a higher indifference curve.
her level of satisfaction may go up or down.
reach an optimum on the same indifference curve.
reach an optimum on a lower indifference curve.
A decrease in the price of a good causes
purchasing power of a person’s income to increase.
the marginal utility of the good to decrease.
the nominal wealth of a person to increase.
the utility of the good to decrease.