Q: Which of the following equations correctly represents profit for a monopolistically competitive firm?

$$Profit = (P - ATC) \times Q$$

Question 1

Which of the following best describes a monopolistically competitive market?

Accepted Answer

Many firms selling similar but not identical products with low barriers to entry.

Question 2

Why does a monopolistically competitive firm face a downward-sloping demand curve?

Accepted Answer

Because its product is differentiated, so some customers are willing to pay more for it.

Question 3

Suppose Blue Bottle Coffee reduces the price of cappuccinos from $$3.50 to 3.00$$, increasing sales from 5 to 6 cups per week. What is the marginal revenue from selling the 6th cup?

Accepted Answer

$0.50

Question 4

Given the following data for Blue Bottle Coffee: At 5 cups, $$P = 3.50$$, $$TR = 17.50$$; at 6 cups, $$P = 3.00$$, $$TR = 18.00. $$What is the marginal revenue for the 6th cup?

Accepted Answer

$$MR = \frac{\Delta TR}{\Delta Q} = \frac{18.00 - 17.50}{6 - 5} = 0.50$$

Question 5

Why is the marginal revenue curve below the demand curve for a monopolistically competitive firm?

Accepted Answer

Because the firm must lower the price on all units sold to sell an additional unit.

Question 6

How does a monopolistically competitive firm determine its profit-maximizing output?

Accepted Answer

By producing where $$MR = MC$$

Question 7

If Blue Bottle Coffee’s average total cost (ATC) at the profit-maximizing output is $$2.50$$ and the price is $$3.50$$, what is the profit per cup?

Accepted Answer

$$1.00$$

Question 8

In the long run, what happens to the demand curve faced by a monopolistically competitive firm?

Accepted Answer

It becomes more elastic as more firms enter the market.

Question 9

Why do monopolistically competitive firms earn zero economic profit in the long run?

Accepted Answer

Because entry of new firms reduces demand for existing firms until $$P = ATC.$$

Question 10

Which of the following strategies can help a monopolistically competitive firm maintain economic profit in the long run?

Accepted Answer

Lowering costs below competitors or increasing product differentiation through innovation or advertising.

Question 11

Which of the following best describes the concept of excess capacity in monopolistic competition?

Accepted Answer

Firms produce less than the output that would minimize average total cost.

Question 12

Which of the following is NOT a characteristic of monopolistic competition?

Accepted Answer

Barriers to entry.

Question 13

How does advertising affect the demand curve for a monopolistically competitive firm?

Accepted Answer

It can make the demand curve more inelastic and shift it to the right.

Question 14

Which of the following equations correctly represents profit for a monopolistically competitive firm?

Accepted Answer

$$Profit = (P - ATC) 	imes Q$$

Question 15

Which of the following statements about efficiency is true for monopolistic competition?

Accepted Answer

Monopolistically competitive firms are neither productively nor allocatively efficient.

Question 16

A monopolistically competitive firm is producing where $$MR = MC$$ and $$P \u003e MC. $$What does this imply?

Accepted Answer

The firm is not allocatively efficient.

Question 17

Which of the following is an example of brand management?

Accepted Answer

A firm continually advertises and updates its product to maintain customer loyalty.

Question 18

Suppose a monopolistically competitive firm is making a short-run loss. What will likely happen in the long run?

Accepted Answer

Firms will exit the market, shifting the demand curve for remaining firms to the right.

Question 19

Which of the following best explains why consumers might benefit from monopolistic competition despite higher prices?

Accepted Answer

Consumers value product differentiation and are willing to pay more for products that better match their preferences.

Monopolistic Competition: Structure, Pricing, and Efficiency

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