Solve using artificial variables.Minimize w = 12x1 + 10x2 + 15x3subject to: 42x1 + 60x2 + 69x3 = 1110 90x1 + 150x2 + 180x3 ? 2700 48x1 + 78x2 + 82x3 ? 1344 x1 ? 0, x2 ? 0, x3 ? 0, x4 ? 0
A. 210
B. 260
C. 256
D. 246
Answer: A
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Factor the trinomial completely.6x2 - 21x - 12
A. 3(2x + 1)(x - 4) B. (6x - 3)(x + 4) C. 3(2x - 1)(x + 4) D. prime
Solve the problem.Refer to the following preference schedule.
Find the winner by the method of pairwise comparisons.
A. C B. A C. D D. B
Find the decimal approximation for the radical. Round the answer to three decimal places.
A. 2.882 B. 2.914 C. 2.904 D. 2.896
The Richter scale converts seismographic readings into numbers for measuring the magnitude of an earthquake according to this function M(x) = log 
, where x0 = 10-3.Two earthquakes differ by 0.1 when measured on the Richter scale. How would the seismographic readings differ at a distance of 100 kilometers from the epicenter?
A. The earthquake of greater magnitude has a seismographic reading that is 100 times that of the lesser earthquake.
B. The earthquake of greater magnitude has a seismographic reading that is 
times that of the lesser earthquake.
C. The earthquake of greater magnitude has a seismographic reading that is 
times that of the lesser earthquake.
D. The earthquake of greater magnitude has a seismographic reading that is 10 times that of the lesser earthquake.