Lane Community College


ECON 200: INTRODUCTION TO  ECONOMICS
ONLINE COURSE

PRACTICE: Supply and Demand



 Supply and Demand Graph

Multipe Choice: identify the correct answer.

Which graph above correctly illustrates the market adjustment that occurs in each situation that follows?

1.    New robotic technology on factory production lines lowers the average cost of production for each Cherokee produced.
        a.    (A)
        b.    (B)
        c.    (C)
d.    (D)
        e.    none of the above is correct

2.    The price of  Ford Broncos (a competitor) falls.
        a.    (A)
        b.    (B)
        c.    (C)
        d.    (D)
        e.    none of the above is correct

3.    Consumers incomes rise due to prolonged growth in the economy.
        a.    (A)
        b.    (B)
        c.    (C)
        d.    (D)
        e.    none of the above is correct


4.    The price of insurance for four-wheel drive vehicles doubles. (Cherokees are four wheel drives.)
        a.    (A)
        b.    (B)
        c.    (C)
        d.    (D)
        e.    none of the above is correct

5.     The government places a $2000 tax per vehicle on the production of all sports utility vehicles (including Cherokees) to discourage the production of low mileage cars.
        a.    (A)
        b.    (B)
        c.    (C)
        d.    (D)
        e.    none of the above is correct

6.    A new union contract raises wages at Jeep Cherokee plants.
        a.    (A)
        b.    (B)
        c.    (C)
        d.    (D)
        e.    none of the above is correct

7.    The price of gasoline rises to $3.89 per gallon.
        a.    (A)
        b.    (B)
        c.    (C)
        d.    (D)
        e.    none of the above is correct

8. The National Highway Safety Council releases a warning that tests and accident reports indicate that Sports Utility Vehicles, including the Jeep Cherokee, have a high rate of rolling over and are unsafe for small children and seniors as a result.
a.    (A)
b.    (B)
c.    (C)
d.    (D)
        e.     none of the above is correct

9.    Cherokee prices are expected to rise in the near future.
a.    (A)
b.    (B)
c.    (C)
d.    (D)
        e.     none of the above is correct


10.    Due to a successful, extended ad campaign consumer preferences become more positive for the Jeep Cherokee.
a.    (A)
b.    (B)
c.    (C)
d.    (D)
        e.     none of the above is correct


11.    A new technology allows the costs of gasoline refining to fall by 50%. This will result in

        a.    the demand curve for gasoline shifting in
        b.    the supply curve
for gasoline shifting in
        c.    the demand curve
for gasoline shifting out
        d.    the supply curve
for gasoline shifting out


12.    In the above question (#11), the new equilibrium will be reached when

        a.    the Supply
of gasoline falls and price rises
        b.    the Supply
of gasoline rises and price falls
        c.    the quantity supplied
of gasoline rises and price rises
        d.    the Demand
of gasoline rises and price falls


13.    Due to a technological breakthrough it is discovered that automobiles can now run on recycled cooking oil at half the price of gasoline. What adjustment will occur?

        a.    The demand line for gas will shift out, to the right.
        b.    The quantity supplied of gas will decrease due to a left shift of the Demand curve.
        c.    The supply line for gas will shift in, to the left
        d.    The supply line for gas will shift out, to the right.


14.    The adjustment in the above question (#13) will cause

        a.    the price of gas to fall and output to increase
        b.    the price of gas to fall and output to decrease
        c.    the price of gas to rise and output to decrease
        d.    the price of gas to rise and output to increase
   

15.    If you refer to movements along a Demand curve, you are talking about

        a.    a rightward shift in the Demand curve
        b.    a leftward shift in the Demand curve
        c.    changes in the quantity Demand
        d.    an increase in Demand


16. Which of the following will cause a decrease in the supply of chicken?

a. The price of chicken falls.
b. Health conscious consumers substitue tofu for chicken in their diets.
c. The nesting costs of chicken farmers increase.
d. New breeding technologies lowers the costs of production of chicken farmers.
e. Newspaper warnings of salmonella bacteria frighten consumers.

17. At prices above the equilibrium price, quantity demanded is:
a. less than quantity supplied, forcing prices down.
b. less than quantity supplied, forcing prices up.
c. greater than quantity supplied, forcing prices down.
d. greater than quantity supplied, forcing prices up.

18. On a graph, a demand line with a slope equal to zero is
a. upward sloping.
b. downward sloping, but very steep.
c. verical.
d. horizontal.
 
19. The recycling station says it will buy all our scrap aluminum for 19 cents per pound. Its demand curve for aluminum is
a. upward sloping.
b. downward sloping, but very steep.
c. verical.
d. horizontal.
 
20. With a nearly flat (or horizontal) demand curve, a shift of the supply curve will generate
a. a very small change in output
b. a very large change in output
c. a very large change in price
d. a and c
e. none of the above.


ANSWERS
                                          
1.   c
2.   b
3.   a
4.   b
5.   d
6.   d
7.   b

8.   b

9.   a
10.   a
11.   d
12.   b
13.   b
14.   b
15.   c
16.   c
17.   a
18.   d
19.   d

20.   b



Do you have questions? Phil's e-mail: martinezp@lcc.edu