Q: Which of the following equations correctly represents the slope of a line given two points $$(x_1$, y_1$)$$ and $$(x_2$, y_2$)$$?

$$ \text{slope} = \frac{y_2 - y_1}{x_2 - x_1} $$

Question 1

Which of the following best defines the concept of scarcity in economics?

Accepted Answer

Scarcity occurs when unlimited wants exceed the limited resources available to fulfill those wants.

Question 2

Suppose you spend 30 minutes waiting in line for a free concert ticket. According to economic principles, what is the opportunity cost of obtaining the ticket?

Accepted Answer

The value of the next best alternative use of your 30 minutes.

Question 3

Which of the following statements about rational decision-making is most accurate according to economic theory?

Accepted Answer

Rational individuals weigh costs and benefits and choose actions that maximize their net benefit.

Question 4

A firm is considering producing one more unit of a good. The marginal benefit (MB) of producing this unit is \$$50, and the marginal cost (MC) is \40. $$According to marginal analysis, what should the firm do?

Accepted Answer

Produce the additional unit because $$MB \u003e MC.$$

Question 5

Which of the following is an example of a trade-off?

Accepted Answer

A student chooses to study for an economics exam instead of going to a movie.

Question 6

In the context of economic models, what is the primary purpose of making assumptions?

Accepted Answer

To simplify real-world problems so they can be analyzed.

Question 7

Which of the following best describes the difference between positive and normative analysis?

Accepted Answer

Positive analysis is concerned with what is, while normative analysis is concerned with what ought to be.

Question 8

Which of the following equations correctly represents the slope of a line given two points $$(x_1$, y_1$)$$ and $$(x_2$, y_2$)$$?

Accepted Answer

$$ 	ext{slope} = \frac{y_2 - y_1}{x_2 - x_1} $$

Question 9

A country can produce either 100 units of food or 200 units of clothing with its available resources. If it chooses to produce 50 units of food, what is the opportunity cost in terms of clothing?

Accepted Answer

100 units of clothing

Question 10

Which of the following is NOT a key economic question every society must answer?

Accepted Answer

How will profits be maximized for every firm?

Question 11

In a market economy, who ultimately decides what goods and services are produced?

Accepted Answer

Consumers, through their purchasing decisions

Question 12

Which of the following best describes a centrally planned economy?

Accepted Answer

An economy where the government decides how economic resources will be allocated.

Question 13

If the area of a rectangle is calculated as $$A = b 	imes h$$, what is the area of a rectangle with base $$b = 8$$ and height $$h = 5$$?

Accepted Answer

$$ A = 40 $$

Question 14

Which of the following is an example of an implicit cost?

Accepted Answer

The salary you could have earned at another job you gave up to start your own business.

Question 15

Which of the following formulas correctly calculates percentage change?

Accepted Answer

$$ 	ext{Percentage Change} = \frac{	ext{New} - 	ext{Old}}{	ext{Old}} 	imes 100 $$

Question 16

Which of the following is a microeconomic issue?

Accepted Answer

The effect of a new tax on the price of gasoline.

Question 17

A firm is considering hiring an additional worker. The marginal benefit (MB) of hiring is $$\100$ and the marginal cost (MC) is $$\$$120. $$According to marginal analysis, what should the firm do?

Accepted Answer

Do not hire the worker because $$MC \u003e MB.$$

Question 18

Which of the following best describes the role of incentives in economics?

Accepted Answer

Incentives motivate individuals and firms to make certain choices.

Question 19

Which of the following is NOT a factor of production?

Accepted Answer

Technology

Question 20

If a line on a graph has a negative slope, what does this indicate about the relationship between the two variables?

Accepted Answer

As one variable increases, the other decreases.

Chapter 1: Economic Models and Foundations – Microeconomics Study Notes

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