6-1 Discussion MATH136

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Southern New Hampshire University *

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136

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Accounting

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Apr 3, 2024

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docx

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For a certain company, the cost function for producing x items is C(x)=30x+200 and the revenue function for selling x items is R(x)=−0.5(x−80)^2+3,200 . The maximum capacity of the company is 130 items. The profit function P(x) is the revenue function R(x) (how much it takes in) minus the cost function C(x) (how much it spends). In economic models, one typically assumes that a company wants to maximize its profit, or at least make a profit! C(x)=30x+200 R(x)=-0.5(x-80)^2+3200 Max cap = 130 items Using this formula I can find what the profit function is. P(x)=r(x)-c(x) 1. Assuming that the company sells all that it produces, what is the profit function? P(x)= -0.5(x-80)^2+3200-30x-200 (x-80)^2=x^2-160x+6400 = -0.5(x^2-160x+6400) +3200-30x-200 Expand: -0.5x^2+80x-3200 = -0.5x^2+80x-3200+3200-30x-200 Simplify: -0.5x^2+80x-3200+3200-30x-200 = -0.5x^2+50x-200 Profit = Revenue - Cost as we examined in Discussion 3. 2. What is the domain of P(x) ? Domain of P(x) is [0,130] Any number of 0 to 130 the max cap of items. Hint: Does calculating P(x) make sense when x=−10 or x=1,000 ?
Both do not make sense. -10 cannot be negative items, and 1,000 is over the map cap. 3. The company can choose to produce either 50 or 60 items. What is their profit for each case, and which level of production should they choose? Profit when producing 50 items = $ 1,050 P(50) =-0.5(50)^2+50(50)-200 P(50) =-0.5(2500) +2500-200 P(50) = -1250+2500-200=1050 Profit when producing 60 items = $1,000 P(60) =0.5(60)^2+50(60)-200 P(60) =-0.5(3600) +3000-200 P(60) = -1800+3000-200=1000 They should use 50 items because the profit is greater, and the level of production is better. 4. Can you explain, from our model, why the company makes less profit when producing 10 more units? The model is a quadratic, and the graph is parabola, after the vertex y decreases. Decreasing functions like this one, for example, show the company makes less profit with each additional item that is produced and sold. Not worth the expense.
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