Introduce slack variables as necessary and write the initial simplex tableau for the problem.Maximize z = 4x1 + x2 subject to: 2x1 + 5x2 ? 11 3x1 + 3x2 ? 19 x1 ? 0, x2 ? 0 
A. 
B. 
C. 
D. 
Answer: B
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Solve the equation after making an appropriate substitution.x1/2 - 9x1/4 + 18 = 0
A. {81, 1296} B. {3, 6} C. {9, 36} D. {-3, -6}
Divide.
A. 9 B. 19 C. 0.9 D. 1.9
Use Bayes' rule to find the indicated probability.Two shipments of components were received by a factory and stored in two separate bins. Shipment I has 2% of its contents defective, while shipment II has 5% of its contents defective. If it is equally likely an employee will go to either bin and select a component randomly, what is the probability that a defective component came from shipment II?
A. 0.714 B. 0.222 C. 0.5 D. 0.2
Solve the inequality by the test-point method. Write the solution in interval notation.4x - 4 - x2 < 0
A. (-2, 2) B. (2, ?) C. (-?, 2) D. (-?, 2) ? (2, ?)