At Phil's Pretzel Stand, we found the following:
4 laborers produced 66 pretzels
5 laborers produced 76 pretzels
6 laborers produced 85 pretzels
7 laborers produced 88 pretzels

What was the marginal product of the sixth laborer?

Which of the following is a plausible reason that restaurants offer "Senior Citizen Discounts"?

A) Senior citizens tend to have relatively more elastic demands for restaurant meals than other consumer groups. B) Senior citizens tend to have relatively more inelastic demands for restaurant meals. than other consumer groups. C) Senior citizens are not very sensitive to changes in prices. D) Senior citizens are easily fooled by "come-ons" and are therefore frequently victims of price discrimination.

The standard definition of money is

a. currency + checking account balances + saving account balances b. currency + checking account balances + travelers' checks c. currency + checking account balances + credit cards d. currency + credit cards + certificates of deposit e. currency only