3. The components of marginal revenue Sean's Fire Engines is the sole seller of fire engines in the fictional country of Pyrotania. Initially, Sean produced eight fire engines, but he has decided to increase production to nine fire engines. The following graph shows the demand curve Sean faces. As you can see, to sell the additional engine, Sean must lower his price from $80,000 to $60,000 per fire engine. Note that while Sean gains revenue from the additional engine he sells, he also loses revenue from the initial eight engines because he sells them all at the lower price. Use the purple rectangle (diamond symbols) to shade the area representing the revenue lost from the initial eight engines by selling at $60,000 rather than $80,000. Then use the green rectangle (triangle symbols) to shade the area representing the revenue gained from selling an additional engine at $60,000. PRICE (Thousands of dollars per fire engine) Sean 100 90 80 70 40 10 ++ 0 0 1 True + 2 False 3 4 5 QUANTITY (Fire engines) 6 7 8 Demand 9 10 Revenue Lost Revenue Gained increase production from 8 to 9 fire engines because the ? True or False: If Sean's Fire Engines were a competitive firm instead and $80,000 were the market price for an engine, decreasing its price from $80,000 to $60,000 would result in the same change in the production quantity and, thus, total revenue. dominates in this scenario.

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What is a price​ taker? A price taker is   A. a firm with a perfectly inelastic demand curve.   B. a firm that has the ability to charge a price greater than marginal cost.   C. a firm that is unable to affect the market price.   D. a firm that does not seek to maximize profits.   E. a firm with a​ downward-sloping demand curve. When are firms likely to be price​ takers? A firm is likely to be a price taker when   A. it has market power.   B. firms in the industry collude.   C. it sells a differentiated product.   D. it represents a small fraction of the total market.   E. barriers to entry are substantial.

The graph below plots the firm's total revenue curve: that is, the relationship between quantity and total revenue given by the two right columns in the table above. The five choices are also labeled. Finally, two black lines are shown; these lines are tangent to the green curve at points B and D. 90 81 72 63 54 В D 45 36 27 18 A E 100 200 300 400 500 600 700 800 QUANTITY (Dishwashers per year) TOTAL REVENUE (Thousands of dollars per year)

20. Paulina sells beef in a competitive market where the price is $6 per pound. Her total revenue and total costs are given in the table below.   Fill out the table. At what quantity does marginal revenue equal marginal cost? What is the profit-maximizing quantity?

Please do fast and add explanation , diagram

Austin is a dot-com entrepreneur who has established a Web site at which people can design and buy awatch. Austin pays $900 a month for a Web server and Internet connection. The watches that customers design are made to order by another firm, and Austin pays this firm $120 a watch. Austin has no other costs. The table shows the demand schedule for Austin's watches. Austin is making an economic profit. In the long run, the demand for Austin's watches OA. decreases; incurs an economic loss OB. increases; makes zero economic profit C. increases, increases his economic profit D. decreases; makes zero economic profit OE. decreases; shuts down and in long-run equilibrium, Austin MIER Price (dollars per watch) 200 160 120 80 40 0 Quantity (watches per month) 0 40 80 120 160 200

For “Developing a Sampling Plan for a New Menu Initiative Survey,” page 163 Owners of the Santa Fe Grill realize that in order to remain competitive in the restaurant industry, new menu items need to be introduced periodically to provide variety for current customers and to attract new customers. Recognizing this, the owners of the Santa Fe Grill believe three issues need to be addressed using marketing research. The first is should the menu be changed to include items beyond the traditional southwestern cuisine? For example, should they add items that would be considered standard American. Italian. or European cuisine? Second, regardless of the cuisine to be explored, how many new items (e.g., appetizers, entrées, or desserts) should be included on the survey? And third, what type of sampling plan should be developed for selecting respondents, and who should those respondents be? Should they be current customers, new customers, and/or old customers?   Determine the appropriate sample…

Use the above figure. Total revenue at the profit-maximizing output is

The figure below depicts the market supply and demand for the perfectly competitive rollerblade industry. S Price per pair of Rollerblades 1,140 070 50 150 Number of pairs of Rollerblades per week Based on the figure above, if the current quantity demanded of rollerblades is 150 per week, you accurately predict that in the short run, Q Select one: a. price and quantity supplied will increase and quantity demanded will decrease. b. price and quantity supplied will decrease and quantity demanded will increase. c. price, quantity supplied and quantity demanded will increase. d. price, quantity supplied and quantity demanded will decrease.