Solve the problem.An economy has three sectors: labor, transportation, and food industries. Suppose the demand on 1 dollar in labor is 35 cents for transportation and 15 cents for food, the demand on 1 dollar in transportation is 55 cents for labor and 27 cents for transportation, and the demand on 1 dollar in food production is 55 cents for labor, 5 cents for transportation, and 33 cents for food. Outside consumer demand for the current production period is 12,000 dollars for labor, 21,000 dollars for transportation, and 12,000 dollars for food. Write an augmented matrix for this economy.
A. 
B. 
C. 
D. 
Answer: D
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According to the text, which of the following is the most common type of succession event?
A. hiring someone from outside the firm B. hiring someone from inside the firm C. hiring someone from outside the industry D. all of these are equally common
Solve the problem.A church steeple casts a shadow 113 ft long, and at the same time a 8.0-ft post casts a shadow 7.0 ft long. How high is the steeple? Round to the nearest unit.
A. 99 ft B. 114 ft C. 8 ft D. 129 ft
Add or subtract as indicated. Simplify the result if possible. If an answer is an improper fraction, write it as a mixed number.
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A. 
B. 
C. 
D. 
Solve using artificial variables.Minimizew = 18x1 + 11x2subject to:2x1 + 2x2 = 14 6x1 + 2x2 ? 36 2x1 + 4x2 ? 24 x1 ? 0, x2 ? 0
A. Minimum is 84 for x1 = 1, x2 = 6 B. Minimum is 112 for x1 = 5, x2 = 2 C. Minimum is 77 for x1 = 0, x2 = 7 D. Minimum is 115.5 for x1 = 5.5, x2 = 1.5