Chapter 3, Basic Elements of Supply and Demand Video Solutions, Economics

Problem 1

a. Define carefully what is meant by a demand schedule or curve. State the law of downward-sloping demand. Illustrate the law of downward-sloping demand with two cases from your own experience.
b. Define the concept of a supply schedule or curve. Show that an increase in supply means a rightward and downward shift of the supply curve. Contrast this with the rightward and upward shift of the demand curve implied by an increase in demand.

Natalie Britton

Numerade Educator

02:28

Problem 2

What might increase the demand for hamburgers? What would increase the supply? What would inexpensive frozen pizzas do to the market equilibrium for hamburgers? To the wages of teenagers who work at McDonald's?

Kaylee Mcclellan

Numerade Educator

01:52

Problem 3

Explain why the price in competitive markets settles down at the equilibrium intersection of supply and demand. Explain what happens if the market price starts out too high or too low.

Kaylee Mcclellan

Numerade Educator

03:33

Problem 4

Explain why each of the following is false:
a. A freeze in Brazil's coffee-growing region will lower the price of coffee.
b. "Protecting" American textile manufacturers from Chinese clothing imports will lower clothing prices in the United States.
c. The rapid increase in college tuitions will lower the demand for college.
d. The war against drugs will lower the price of domestically produced marjjuana.

Natalie Britton

Numerade Educator

02:38

Problem 5

The following are four laws of supply and demand. Fill in the blanks. Demonstrate each law with a supply-anddemand diagram.
a. An increase in demand generally raises price and raises quantity demanded.
b. $\quad$ A decrease in demand generally and
c. An increase in supply generally lowers price and raises quantity demanded.
d. $\quad$ A decrease in supply generally
- price and

Kaylee Mcclellan

Numerade Educator

View

Problem 6

For each of the following, explain whether quantity demanded changes because of a demand shift or a price change, and draw a diagram to illustrate your answer:
a. $\mathrm{As}$ a result of increased military spending, the price of Army boots rises.
b. Fish prices fall after the pope allows Catholics to eat meat on Friday.
c. An increase in gasoline taxes lowers the consumption of gasoline.
d. After the Black Death struck Europe in the fourteenth century, wages rose.

Rashmi Sinha

Numerade Educator

07:57

Problem 7

Examine the graph for the price of gasoline in Figure $3-1,$ on page $46 .$ Then, using a supply-and-demand diagram, illustrate the impact of each of the following on price and quantity demanded:
a. Improvements in transportation lower the costs of importing oil into the United States in the 1960 s.
b. After the 1973 war, oil producers cut oil production sharply.
c. After $1980,$ smaller automobiles get more miles per gallon.
d. A record-breaking cold winter in $1995-1996$ unexpectedly raises the demand for heating oil.
e. Rapid economic growth in the early 2000 s leads to
a sharp upturn in oil prices.

John Lee

Numerade Educator

04:29

Problem 8

Examine Figure $3-3$ on page $49 .$ Does the pricequantity relationship look more like a supply curve or a demand curve? Assuming that the demand curve was unchanged over this period, trace supply curves for 1965 and 2008 that would have generated the $(P, Q)$ pairs for those years. Explain what forces might have Ied to the shift in the supply curve.

John Lee

Numerade Educator

03:03

Problem 9

From the following data, plot the supply and demand curves and determine the equilibrium price and quantity:
What would happen if the demand for pizzas tripled at each price? What would occur if the price were initially set at $\$ 4$ per pira?

Oluwadamilola Ameobi

Numerade Educator