Principles of Economics 2e
2nd Edition
ISBN: 9781947172364
Author: Steven A. Greenlaw; David Shapiro
Publisher: OpenStax
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Textbook Question
Chapter 8, Problem 20RQ
What two lines on a cost curve diagram intersect at the zero-profit point?
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Tasks
Exercise 1
Assess the following functions:
1. f(x)= x2+6x+2
2.f '(x)=10x-2x2+5
a. Find the stationary points. (5 marks)
b. Determine whether the stationary point is a maximum or minimum. (5 marks)
c. Draw the corresponding curves (5 marks)
Problem 2:
The sales data over the last 10 years for the Acme Hardware Store are as follows:
2003
$230,000
2008
$526,000
2004
276,000
2009
605,000
2005
328,000
2010
690,000
2006
388,000
2011
779,000
2007
453,000
2012
873,000
1. Calculate the compound growth rate for the period of 2003 to 2012.
2. Based on your answer to part a, forecast sales for both 2013 and 2014.
3. Now calculate the compound growth rate for the period of 2007 to 2012.
1. Based on your answer to part e, forecast sales for both 2013 and 2014.
5. What is the major reason for the differences in your answers to parts b and d? If you were to
make your own projections, what would you forecast? (Drawing a graph is very helpful.)
Exercise 4A firm has the following average cost: AC = 200 + 2Q – 36
Q
Find the stationary point and determine if it is a maximum or a minimum.b. Find the marginal cost function.
Chapter 8 Solutions
Principles of Economics 2e
Ch. 8 - Firms ill a perfectly competitive market are said...Ch. 8 - Would independent trucking fit the characteristics...Ch. 8 - Look at Table 8.13. What would happen to the films...Ch. 8 - Suppose that the market price increases to 6, as...Ch. 8 - Explain in words why a profit-maximizing film will...Ch. 8 - A firms marginal cost curve above the average...Ch. 8 - If new technology in a perfectly competitive...Ch. 8 - A market in perfect competition is in long-run...Ch. 8 - Productive efficiency and allocative efficiency...Ch. 8 - Explain how the profit-maximizing rule of setting...
Ch. 8 - A single firm in a perfectly competitive market is...Ch. 8 - What are the four basic assumptions of perfect...Ch. 8 - What is a price taker firm?Ch. 8 - How does a perfectly competitive firm decide what...Ch. 8 - What prevents a perfectly competitive firm from...Ch. 8 - How does a perfectly competitive film calculate...Ch. 8 - Briefly explain the reason for the shape of a...Ch. 8 - What two rules does a perfectly competitive firm...Ch. 8 - How does the average cost curve help to show...Ch. 8 - What two lines on a cost curve diagram intersect...Ch. 8 - Should a firm shut down immediately if it is...Ch. 8 - How does the average variable cost curve help a...Ch. 8 - What two lines on a cost curve diagram intersect...Ch. 8 - Why does entry occur?Ch. 8 - Why does exit occur?Ch. 8 - Do entry and exit occur in the short run, the long...Ch. 8 - What price will a perfectly competitive firm end...Ch. 8 - Will a perfectly competitive market display...Ch. 8 - Will a perfectly competitive market display...Ch. 8 - Finding a life partner is a complicated process...Ch. 8 - Can you name five examples of perfectly...Ch. 8 - Your company operates in a perfectly competitive...Ch. 8 - Since a perfectly competitive firm can sell as...Ch. 8 - Many films in the United States file for...Ch. 8 - Why will profits for films in a perfectly...Ch. 8 - Why will losses for firms in a perfectly...Ch. 8 - Assuming that the market for cigarettes is in...Ch. 8 - In the argument for why perfect competition is...Ch. 8 - The AAA Aquarium Co. sells aquariums for 20 each....Ch. 8 - Perfectly competitive firm Doggies Paradise Inc....Ch. 8 - A computer company produces affordable,...
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