Answer the question.The graph below shows the level curves of a differentiable function f(x, y) (thin curves) as well as the constraint g(x, y) = 
- 
= 0 (thick circle). Using the concepts of the orthogonal gradient theorem and the method of Lagrange multipliers, estimate the coordinates corresponding to the constrained extrema of f(x,y).
A. (1.5, 0.2), (0.7, 1.3), (-1.5, 0.2), (-0.7, 1.3), (-1.5, -0.2), (-0.7, -1.3), (1.5, -0.2), (0.7, -1.3)
B. (1.1, 1.1), (-1.1, 1.1), (-1.1,-1.1), (1.1,-1.1)
C. (1.5, 0), (0, 1.5), (-1.5, 0), (0, -1.5)
D. (1.3, 0.7), (-1.3, 0.7), (-1.3,-0.7), (1.3,-0.7)
Answer: D
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Write the improper fraction as a mixed or whole number.
A. 
B. 14
C. 15
D. 13
Solve.In how many ways can you select 5 dresses out of 12 dresses?
A. 8 B. 495 C. 792 D. 99
Solve the problem.Wind speed varies in the first twenty meters above the ground. For a particular day, let 
compute the wind speed x meters above the ground. At what height is the wind speed 11 meters per second? Round results to the nearest hundredth.
A. 0.97 B. 1.70 C. 0.53 D. 0.59