AnswersEA Academy Civics 9Interactions in the US Economy

Interactions in the US Economy Answers

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1
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Review the graph.

Question illustration
A
inflation
B
deflation
C
the circular flow of income
D
the consumer price index
2
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What is one cause of hyperinflation?

A
The government overprints money to boost the economy.
B
The demand for a product grows in response to a limited supply.
C
Prices fall across an economy due to a drop in consumer interest.
D
The supply of a product unexpectedly increases with a rise in production.
3

Which statement best explains the role of workers in the circular flow of income?

A
Workers are a factor of production, and they produce goods or services.
B
Workers represent the households that use goods and services.
C
Workers represent businesses and pay dividends to stockholders.
D
Workers are consumers who buy products made by firms.
4

Which scenario is an example of cost-push inflation?

A
The cost of purses rises after a store does not stock a large enough supply.
B
The cost of gasoline rises at least once a year to match the cost of living.
C
The cost of sneakers rises after a celebrity recommends them and demand goes up.
D
The cost of cell phones rises after manufacturing them becomes more expensive.
5

The bottom line on the graph shows the change in American workers’ average hourly wages from 1964 to 2018. The top line on the graph shows average wages in today’s dollars after being adjusted for inflation.

Question illustration
A
Although wages have risen, purchasing power has stayed the same.
B
Both wages and purchasing power have steadily increased over time.
C
Although wages have fallen, purchasing power has stayed the same.
D
Both wages and purchasing power have steadily decreased over time.
6

Review the graph.

Question illustration
A
They will pay much less for tickets.
B
They will pay much more for tickets.
C
They will pay slightly less for tickets.
D
They will pay slightly more for tickets.
7

What is deflation?

A
the wage an average worker makes
B
the wage an average business pays
C
a general increase in prices in an economy
D
a general decrease in prices in an economy
8

Review the graph.

Question illustration
A
recession
B
circular flow of income
C
cost-of-living adjustment
D
depression
9

What is one famous example of deflation?

A
the loss of the value of Zimbabwe’s dollar
B
the Great Depression in the US in the 1930s
C
the printing of German marks to pay war debts
D
the steep rise in gas prices in the US in the 1970s
10

What is the next step in the circular flow of income after firms produce goods and services?

A
Firms provide labor.
B
Households purchase labor.
C
The goods go back to the firms.
D
Households consume goods and services.
11

–32 + [___] = 2(x2 + 10x + 25)

Answer:

50

12

Add 4Add 16Subtract 4Subtract 16

A
Add 4
B
Add 16
C
Subtract 4
D
Subtract 16
13

–2–125

A
–2
B
–1
C
2
D
5
14

Which are steps that could be used to solve 0 = 9(x2 + 6x) – 18 by completing the square? Check all that apply.18 + 81 = 9(x2 + 6x + 9)18 + 9 = 9(x2 + 6x + 9)18 + 36 = 9(x2 + 6x + 36)11 = (x + 3)2 StartRoot 342 EndRoot = (x + 6)2 StartRoot 99 EndRoot = (x + 3)2

A
18 + 81 = 9(x2 + 6x + 9)
B
18 + 9 = 9(x2 + 6x + 9)
C
18 + 36 = 9(x2 + 6x + 36)
D
11 = (x + 3)2
E
= (x + 6)2
F
= (x + 3)2
15

–9 = 7x2 – [___] x

Answer:

56

16

Which are steps in the process of completing the square used to solve the equation 3 – 4x = 5x2 – 14x? Check all that apply.3 = 5(x2 + 2x)3 = 5x2 – 10x4 = 5(x2 – 2x + 1)8 = 5(x2 – 2x + 1)3 = 5(x – 1)24 = 5(x – 1)2 StartFraction 8 Over 5 EndFraction = (x – 1)2

A
3 = 5(x2 + 2x)
B
3 = 5x2 – 10x
C
4 = 5(x2 – 2x + 1)
D
8 = 5(x2 – 2x + 1)
E
3 = 5(x – 1)2
F
4 = 5(x – 1)2
G
= (x – 1)2
17

What are the zeros of the quadratic function f(x) = 6x2 – 24x + 1?

A
x = –2 + or x = –2 –
B
x = 2 + or x = 2 –
C
x = –2 + or x = –2 –
D
x = 2 + or x = 2 –
18

Andy is solving a quadratic equation using completing the square. If a step in the process results in = (x – 6)2, could the original quadratic equation be solved by factoring? Explain your reasoning.

Question illustration
Answer:

Yes, the original equation can be solved by factoring. Taking the square root of both sides of (x – 6)² = 169/9 gives x – 6 = ±13/3 because 169 and 9 are perfect squares. This results in rational solutions for x (x = 31/3 and x = 5/3). Since the solutions are rational numbers, the original quadratic expression is factorable.

19

What are the zeros of the quadratic function f(x) = 6x2 + 12x – 7?

A
x = –1 – and x = –1 +
Option A
B
x = –1 – and x = –1 +
Option B
C
x = –1 – and x = –1 +
Option C
D
x = –1 – and x = –1 +
Option D
20

What energy transformation is taking place in the photo?

A
radiant energy to thermal energy
B
thermal energy to nuclear energy
C
chemical energy to thermal energy

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