a. Why not? Since the third plateful gave you zero units, the fourth can’t give you any
less than zero.
b. No way. You could get negative utility from the fourth plateful.
c. Yes or no. It won’t make any difference because your total utility is at its peak.
d. Yes. If you received zero units of satisfaction from the third, then obviously the law
of diminishing marginal utility is not working in this case.
Which of the following statements is true?
a. Monopolistic competitive firms will earn economic profits in the long run because of
their ability to control the price of the product.
b. Monopolistic competitive firms that earn economic profits in the short run commonly
will find their profits competed away in the long run.
c. Monopolistic competitive firms will earn zero economic profits in both the short and
the long run.
d. Monopolistic competitive firms must earn economic profits in the long run, or they
will shut down.
e. Monopolistic competitive firms must earn economic profits in the short run, or they
will shut down.
Assuming the wage-employment tradeoff exists, if labor in a particular geographic area
is homogeneous and the unionized workers successfully negotiate a higher wage rate,
then