Use the two-stage method to solve.Minimizew = 18x1 + 11x2subject to:2x1 + 2x2 = 14 6x1 + 2x2 ? 36 2x1 + 4x2 ? 24 x1 ? 0, x2 ? 0
A. Minimum is 115.5 for x1 = 5.5, x2 = 1.5
B. Minimum is 84 for x1 = 1, x2 = 6
C. Minimum is 77 for x1 = 0, x2 = 7
D. Minimum is 112 for x1 = 5, x2 = 2
Answer: A
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Decide if the given equation is a solution of the given differential equation.2xyy' + x2 = y2, x2 + y2 = -3x
A. Yes B. No
The following spinner is used to play a board game. Expressing your answer as a fraction in simplest form, what is the probability that the spinner will land on the specified place? 
Find the probability that the spinner points toward a number less than 9.
A. 0
B. 1
C. 
D. 
Solve the problem.Mike, Joe, and Bill are painting a fence. The painting can be finished if Mike and Joe work together for 4 hours and Bill works alone for 2 hours or if Mike and Joe work together for 2 hours and Bill works alone for 5 hours, or if Mike works alone for 6 hours, Joe works alone for 2 hours, and Bill works alone for 1 hour. How much time does it take for each man working alone to complete the painting?
A. Mike 8 hr, Joe 8 hr, Bill 16 hr B. Mike 16 hr, Joe 8 hr, Bill 8 hr C. Mike 8 hr, Joe 16 hr, Bill 8 hr D. Mike 12 hr, Joe 10 hr, Bill 10 hr
Match the equation to the graph.
- 
= 1
A. 
B. 
C. 
D. 