Suppose that each firm in a competitive industry has the following as the Total cost: TC=50+ ½q2 Where q is an individual firm’s quantity produced.   The market demand curve for this product is Demand:                         Q = 120 – P Where P is the price and Q is the total quantity of the good. Currently, there are 9 firms in the market   What is each firm’s fixed cost? What is its variable cost? At what quantity efficiency of scale would be achieved? Give the equation for each firm’s supply curve Give the equation for the market supply curve for the short run What is the equilibrium price and quantit

Consider the competitive market for steel. Assume that, regardless of how many firms are in the industry, every firm in the industry is identical and faces the marginal cost (MC), average total cost (ATC), and average variable cost (AVC) curves shown on the following graph. V AVC COSTS (Dollars per ton) 100 882 889 80 20 0 MC 5 25 30 35 QUANTITY (Thousands of tons) 15 20 10 45 40 50 The following diagram shows the market demand for steel.

4. Various measures of cost Douglas Fur is a small manufacturer of fake-fur boots in San Francisco. The following table shows the company's total cost of production at various production quantities. Fill in the remaining cells of the following table. Average Variable Cost (Dollars per pair) Average Total Cost (Dollars per pair) Quantity Total Cost Marginal Cost Fixed Cost Variable Cost (Pairs) (Dollars) (Dollars) (Dollars) (Dollars) 120 1 210 2 270 3 315 4 380 5 475 630

Suppose the imaginary company of Roobek is a small, Cedar Rapids-based American apparel manufacturer specializing in athleisure. The following table presents the brand’s total cost of production at several different quantities. Fill in the remaining cells of the following table. Quantity Total Cost Marginal Cost Fixed Cost Variable Cost Average Variable Cost Average Total Cost (Pairs) (Dollars) (Dollars) (Dollars) (Dollars) (Dollars per pair) (Dollars per pair) 0 60       — —   1 155           2 220           3 255           4 300           5 350           6 450

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Suppose that the market for dress shirts is a competitive market. The following graph shows the daily cost curves of a firm operating in this market. 50 18, 42 45 40 35 30 ATC 25 20 15 AVC 10 MC 2 4 6 8 10 12 14 16 18 20 QUANTITY (Thousands of shirts) For each price in the following table, calculate the firm's optimal quantity of units to produce, and determine the profit or loss if it produces at that quantity, using the data from the graph to identify its total variable cost. Assume that if the firm is indifferent between producing and shutting down, it will produce. (Hint: You can select the purple points [diamond symbols] on the graph to see precise information on average variable cost.) Price Quantity Total Revenue Fixed Cost Variable Cost Profit (Dollars per shirt) (Shirts) (Dollars) (Dollars) (Dollars) (Dollars) 12.50 7,500 135,000 27.50 135,000 45.00 135,000 If the firm shuts down, it must incur its fixed costs (FC) in the short run. In this case, the firm's fixed cost is…

The table below shows the weekly marginal cost (MC) and average total cost (ATC) for Buddies, a purely competitive firm that produces novelty ear buds. Assume the market for novelty ear buds is a competitive market and that the price of ear buds is $6.00 per pair. Buddies Production Costs Quantity MC ATC of Ear Buds ($) ($) 20 1.00 25 2.00 1.20 30 2.46 1.41 35 3.51 1.71 40 4.11 2.01 45 5.43 2.39 50 5.99 2.75 55 8.47 3.27 Instructions: In part a, enter your answer as the closest given whole number. In parts b-d, round your answers to two decimal places. a. If Buddies wants to maximize profits, how many pairs of ear buds should it produce each week? pairs b. At the profit-maximizing quantity, what is the total cost of producing ear buds? 2$ c. If the market price for ear buds is $6 per pair, and Buddies produces the profit-maximizing quantity of ear buds, what will Buddies profit or loss be per week? 2$

A catering company producing fruit ice, in the Tandy school, has a production function q = 10min(k,l), where k is capital and 1 is labor. a. 15% If v = 81000 and w = 500 and P = 8600, where v, w, and P are as per the lecture notes, how many units of fruit ice will be produced and how much profit will be obtained? b. 10% Draw the supply curve for this catering company.

Suppose the imaginary company of Panthera is a small, Raleigh-based American apparel manufacturer specializing in athleisure. The following table presents the brand's total cost of production at several different quantities. Fill in the remaining cells of the following table. Quantity Total Cost (Pairs) (Dollars) Marginal Cost (Dollars) Fixed Cost Variable Cost (Dollars) (Dollars) Average Variable Cost (Dollars per pair) Average Total Cost (Dollars per pair) 0 120 1 210 2 270 3 315 4 380 475 6 630

am. 116.