ENGR.ECONOMIC ANALYSIS
14th Edition
ISBN: 9780190931919
Author: NEWNAN
Publisher: Oxford University Press
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- Drybar, a hair salon, has very loyal customers and faces a weekly demand for blowouts equal to qD = 1,040 – 20P. The salon has weekly total cost of TC(q)=0.05q2+20q+500. a) Ia diagram, draw drybar’s demand curve (PD). Write Drybar’s revenue as a function of the firm’s quantity. Compute the expression of Drybar’s Marginal Revenue and draw the MR curve in your. In the diagram, draw the MR curve. Note that it has twice the slope than demand. b) In the same diagram, illustrate drybar’s average total cost curve (ATC), and marginal cost curve (MC). If Drybar were a perfectly competitive firm, in the long run at what price would it sell its output? Drybar instead has market power. Suppos the firm charges all customers the same price for a blowout. c) Find the profit maximizing level of output (q*) and price (p*). Compute the price elasticity of demand at q* and show that at q* MR(q*) = p*(1+1/e) = MC(q*) i) Compute the consumer surplus created by Drybar and the profit of the firm.arrow_forwardAlert dont submit AI generated answer. 2. There are N consumers uniformly distributed along a linear city of unit length, served by two shops located at opposite extremities of the city. The two shops sell an identical product, for which consumers have unit demands, and they have identical constant marginal costs of 2 and no fixed costs. The cost to consumers of travelling the length of the city is 4. a) Making clear your assumptions and calculations, work out the optimal prices the shops should charge for the product, and their profits in terms of N. How does your result relate to the so-called Bertrand Paradox? b) Explain why it is optimal for the shops to locate at opposite ends of the city. c) Suppose one shop only has a marginal cost of 1, but there are no other changes to the setting. Calculate the optimal prices for the shops, and their profits in terms of N.arrow_forwardTim Marlow, the owner of The Clock Works, wanted to know how many clocks he must sell in order to cover his fixed cost at a given price. Tim knew that he had a fixed cost of $20,000 for equipment, taxes, and a bank loan. He also had a unit variable cost of $20 per clock for labor, materials, and promotional costs. If the price Tim charges for each of his clocks is $40, what is his break-even point quantity?arrow_forward
- The market structure of the local pizza industry is best characterised by monopolistic competition. Pizza Shack is one of the producers in the local market.The market demand for Pizza Shack is: Qd = 225 – 10P.Pizza Shack’s cost function is: C(Q) = 0.15Q^2Where Q^2 refers to q squared5. Differentiate the total cost function to find marginal cost:arrow_forwardSuppose that Spacely Sprockets' marginal cost of a jacket is a constant $150 and the total fixed cost at one of its stores is $3,000 a day. This particular store seils 40 jackets a day, which is its profit-maximizing number of jackets. The nearby stores begin to advertise their jackets. The Spacely Sprockets store now spends $1,500 a day advertising its jackets, and its profit-maximizing number of jackets sold jumps to 50 a day. What happens to the price of a Spacely Sprockets' jacket, Spacely Sprockets' markup, and Spacely Sprockets' economic profit?arrow_forwardDetermine the profit-maximizing quantity, the profit-maximizing price and the profit of the firm given the following inverse demand function: P=400-5Q and the marginal cost of 140.arrow_forward
- Pierce Manufacturing determines that the daily revenue, in dollars, from the sale of x lawn chairs is R(x)=0.005x³ +0.02x² +0.5x Currently, Pierce sells 90 lawn chairs daily a) What is the current daily revenue? b) How much would revenue increase if 95 lawn chairs were sold each day? c) What is the marginal revenue when 90 lawn chairs are sold daily? d) Use the answer from part (c) to estimate R(91), R(92), and R(93) a) The current revenue is $ b) The revenue would increase by $ (Round to the nearest cent.) c) The marginal revenue is $ when 90 lawn chairs are sold daily. d) R(91) $ R(92) $ R(93) $arrow_forwardA9arrow_forwardHelp me pleasearrow_forward
- 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)arrow_forwardOn the graph input tool, change the number found in the Quantity Demanded field to determine the prices that correspond to the production of 0, 6, 12, 15, 18, 24, and 30 units of output. Calculate the total revenue for each of these production levels. Then, on the following graph, use the green points (triangle symbol) to plot the results. Calculate the total revenue if the firm produces 6 versus 5 units. Then, calculate the marginal revenue of the sixth unit produced. The marginal revenue of the sixth unit produced is________. Calculate the total revenue if the firm produces 12 versus 11 units. Then, calculate the marginal revenue of the 12th unit produced. The marginal revenue of the 12th unit produced is_________.arrow_forward2. A firm has a cost function of C = 1000+20Q + 1/10Q2 and has a demand function as shown in the graph below: 100 90 80 70 70 60 60 50 40 30 20 10 0 10 20 30 40 50 60 70 80 90 100 Quantity (Q) -P (demand) a) Estimate the firm's demand function. You may assume that the slope is a whole number, and the intercept is a multiple of 10. (1 mark) b) Find the firm's revenue function. You do not need to draw it. (2 marks) c) Find the marginal revenue function, and draw it on a copy of the graph. (3 marks) d) Find and draw the marginal cost function. (3 marks) e) Use your results from parts (c) and (d) to find the profit-maximising level of output. (3 marks) f) Find the market price at this level of output. (2 marks)arrow_forward
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