Exam 6: Linear Programming

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Maximize p=1.2x+1.1yp = 1.2 x + 1.1 y over the region defined by the inequalities. Round your answer to one decimal place. ​ {7x+6y84x+y13x0,y0}\left\{ \begin{array} { c } 7 x + 6 y \leq 84 \\x + y \leq 13 \\x \geq 0 , y \geq 0\end{array} \right\} ​ Max: p=p = __________

(Short Answer)
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The Marketing Club at your college has decided to raise funds by selling three types of T-shirt: one with a single-color "ordinary" design, one with a two-color "fancy" design, and one with a three-color "very fancy" design. The club feels that it can sell up to 400 T-shirts. "Ordinary" T-shirts will cost the club $6 each, "fancy" T-shirts $8 each, and "very fancy" T-shirts $10 each, and the club has a total purchasing budget of $4,000. It will sell "ordinary" T-shirts at a profit of $4 each, "fancy" T-shirts at a profit of $5 each, and "very fancy" T-shirts at a profit of $4 each. How many of each kind of T-shirt should the club order to maximize profit What is the maximum profit the club can make ?

(Multiple Choice)
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The University's employee credit union has $4 million available for loans in the coming year. As VP in charge of finances, you must decide how much capital to allocate to each of four different kinds of loans, as shown in the table. Type of Loan Annual Rate of Return Automobile 8\% Furniture 10\% Signature 12\% Other secured 10\% State laws and credit union policies impose the following restrictions: Signature loans may not exceed 10 percent of the total investment of funds. Furniture loans plus other secured loans may not exceed automobile loans. How much should you allocate to each type of loan to maximize the annual return

(Multiple Choice)
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Maximize p=2x+3y+1.1z+4wp = 2 x + 3 y + 1.1 z + 4 w Subject to 1.2x+y+z+w \leq42 2.2x+y-z-w \geq15 1.2x+y+z+1.2w \geq11.5 x\geq0,y\geq0,z\geq0,w \geq0 Round all answers to two decimal places.

(Multiple Choice)
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Minimize c=5x+8yc = 5 x + 8 y subject to the following (using the simplex method). ​ 7x+3y\geq30 2x+3y\geq12 x\geq0,y\geq0 ​ c=c = __________ ​ x=x = __________ ​ y=y = __________

(Short Answer)
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Fancy Pineapple produces pineapple juice and canned pineapple rings. This year the company anticipates a demand of at least 10,000 pints of pineapple juice and 500 cans of pineapple rings. Each pint of pineapple juice requires 2 pineapples, and each can of pineapple rings requires 1 pineapple. The company anticipates using at least 5,000 pineapples for these products. Each pint of pineapple juice costs the company 20 cents to produce, and each can of pineapple rings costs 50 cents to produce. How many pints of pineapple juice and cans of pineapple rings should Fancy Pineapple produce to meet the demand and minimize total costs ?

(Multiple Choice)
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Which system does the graph satisfy Which system does the graph satisfy

(Multiple Choice)
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You are thinking of combining Cell-Tech and Riboforce HP to obtain a 10-day supply that provides at least 50 grams of creatine and at least 8 grams of taurine, but no more than 600 grams of carbohydrates and no more than 800 milligrams of alpha lipoic acid. Use the data on bodybuilding supplements. (Figures shown correspond to a single serving.) Creatine () Carbohydrates () Taurine () Alpha Lipoic Acid () Cost () Cell-Tech MuscleTech) 10 75 2 200 2.20 RiboForce HP (EAS) 5 15 1 0 1.60 How many servings of each supplement should you combine to meet your specifications at the least cost

(Multiple Choice)
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Solve the linear programming problem. Minimize C=3x5yC = - 3 x - 5 y subject to 2x+3y\leq12 7x-6y\leq30 x\geq0,y\geq0 ​ x=x = __________ y=y = __________ C=C = __________

(Short Answer)
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Maximize p=x+2yp = x + 2 y Subject to x+y \leq20 y \geq8 2x-y \geq0 x\geq0,y \geq0

(Multiple Choice)
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Solve the standard minimization problem using duality. 3s+2t+u\geq150 2s+t+3u\geq150 subject to s+3t+2u\geq150 s\geq0,t\geq0,u\geq0 If you have several solutions, select one of them.

(Multiple Choice)
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Maximize ​ p=x+2yp = x + 2 y ​ subject to ​ x+y \leq25 y \geq3 2x-y \geq0 x\geq0,y \geq0 ​ Please enter your answer as three numbers, separated by commas in the order p, x, y. If there is no solution, enter no solution.

(Essay)
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If x dollars is invested in a company that controls, say, 30 percent of the market with 5 brand-names, then 0.3x0.3 x is a measure of market exposure and 5x5 x is a measure of brand-name exposure. Now suppose you are a broker at a large securities firm, and one of your clients would like to invest up to $100,000 in recording industry stocks. You decide to recommend a combination of stocks in four of the world's largest companies: Warner Music, Universal Music, Sony, and EMI. Warner Music Universal Music Sony EMI Market Share 12\% 20\% 20\% 15\% Number of brand-names 8 20 10 15 You wanted your client to maximize his total market exposure but limit his brand-name exposure to 2 million or less (representing an average of 20 labels or fewer per company), and still invest at least 20 percent of the total in Universal. How much should you advise your client to invest in each company

(Multiple Choice)
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Minimize c=5.45x+y+1.5z+wc = 5.45 x + y + 1.5 z + w Subject to 5.12x-y+w \geq1,500 z+w \geq1,500 1.12x+y \leq1,000 x\geq0,y\geq0,z \geq0

(Multiple Choice)
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Solve the standard minimization problem using duality. ​ Minimize c=5s+4tc = 5 s + 4 t ​ subject to 3s+t\geq30 s+t\geq20 s+3t\geq30 s\geq0,t\geq0 ​ c=c = __________ ​ s=s = __________ ​ t=t = ___________

(Short Answer)
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You are in charge of purchases at the student-run used-book supply program at your college, and you must decide how many introductory calculus, history, and marketing texts should be purchased from students for resale. Due to budget limitations, you cannot purchase more than 1,100 of these textbooks each semester. There are also shelf-space limitations: Calculus texts occupy 2 units of shelf space each, history books 1 unit each, and marketing texts 3 units each, and you can spare at most 1,200 units of shelf space for the texts. If the used book program makes a profit of $10 on each calculus text, $4 on each history text, and $8 on each marketing text, how many of each type of text should you purchase to maximize profit What is the maximum profit the program can make in a semester ?

(Multiple Choice)
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Solve the games with the given payoff matrix. P=[352324433]P = \left[ \begin{array} { l l l } - 3 & - 5 & - 2 \\- 3 & - 2 & - 4 \\- 4 & - 3 & - 3\end{array} \right]

(Multiple Choice)
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Safety-Kleen operates the world's largest oil refinery at Elgin, Illinois. You have been hired by the company to determine how to allocate its intake of up to 70 million gallons of used oil to its three refinery processes: A, B, and C. You are told that electricity costs for process A amount to $150,000 per million gallons treated, while for processes B and C, the costs are respectively $100,000 and $50,000 per million gallons treated. Process A can recover 60 percent of the used oil, process B can recover 55 percent, and process C can recover only 50 percent. Assuming a revenue of $4 million per million gallons of recovered oil and an annual electrical budget of $4.9 million, how much used oil would you allocate to each process in order to maximize total revenues Allocate __________ million gals to process A, __________ million gals to process B and __________ million gals to process C.

(Short Answer)
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Oz makes lion food out of giraffe and gazelle meat. Giraffe meat has 18 grams of protein and 36 grams of fat per pound, while gazelle meat has 36 grams of protein and 18 grams of fat per pound. A batch of lion food must contain at least 36,000 grams of protein and 54,000 grams of fat. Giraffe meat costs $2/pound and gazelle meat costs $4/pound. How many pounds of each should go into each batch of lion food in order to minimize costs Please round the answers to the nearest pound. __________ pound(s) of giraffe meat and __________ pound(s) of gazelle. What are the shadow costs of protein and fat Please round the answers to the nearest cent. __________ cents per gram of protein and __________ cents per gram of fat.

(Short Answer)
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You are thinking of combining Cell-Tech and Creatine Transport to obtain a 10-day supply that provides at least 90 grams of creatine and at least 10 grams of taurine, but no more than 675 grams of Carbohydrates and no more than 2,500 milligrams of alpha lipoic acid. Use the data on bodybuilding supplements. (Figures shown correspond to a single serving.) Creatine () Carbohydrates () Taurine () Alpha Lipoic Acid () Cost (\ ) Cell-Tech 10 75 2 200 2.20 (MuscleTech) Creatine Transport (Kaizen) 5 35 1 100 0.60 How many servings of each supplement should you combine to meet your specifications at the least cost

(Multiple Choice)
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