Everyweek, Sally plays tennis for three hours, and her grade on each math test is 90
percent.
Lastweek, after playing for three hours, Sally considered playing for another hour.
She decided to play for another hour and cut her study time by one hour.
But lastweek, her math grade fell to 70 percent.
Did Sally make her decision on themargin?
Give this one a try later!
, Sally made her decision at the margin because she considered the benefit
and cost of one additional hour of tennis.
Explain how the following headlines concernself-interest and the socialinterest:
1. Business Depot, a U.S office supply store, is opening in Europe, and McDonalds is
expanding in India.
2. Cigarette packs must carry a health warning.
Give this one a try later!
Business Depot and McDonalds make decisions in their_self-interest_ and
by serving theself-interest of customers _contribute to the social interest._
Health warnings are in the _socialinterest_, but people decide whether to
heed them in their_self-interest_.
Rational choice is a choice that uses the available resources to_____ of the person
making the choice.
Give this one a try later!
best achieve the objective
A choice on the margin is a choice that is made by comparing all the relevant_____
systematically and_____.
Marginal cost is the_____ that arises from one unit_____ in an activity.
Marginal benefit is the_____ that arises from one unit_____ in an activity.
percent.
Lastweek, after playing for three hours, Sally considered playing for another hour.
She decided to play for another hour and cut her study time by one hour.
But lastweek, her math grade fell to 70 percent.
Did Sally make her decision on themargin?
Give this one a try later!
, Sally made her decision at the margin because she considered the benefit
and cost of one additional hour of tennis.
Explain how the following headlines concernself-interest and the socialinterest:
1. Business Depot, a U.S office supply store, is opening in Europe, and McDonalds is
expanding in India.
2. Cigarette packs must carry a health warning.
Give this one a try later!
Business Depot and McDonalds make decisions in their_self-interest_ and
by serving theself-interest of customers _contribute to the social interest._
Health warnings are in the _socialinterest_, but people decide whether to
heed them in their_self-interest_.
Rational choice is a choice that uses the available resources to_____ of the person
making the choice.
Give this one a try later!
best achieve the objective
A choice on the margin is a choice that is made by comparing all the relevant_____
systematically and_____.
Marginal cost is the_____ that arises from one unit_____ in an activity.
Marginal benefit is the_____ that arises from one unit_____ in an activity.
