All references are to the figure below. The distance between A and P is x, and the distance between A and C is y. 
Assuming that A = 37° and r = 11, find B and x.
A. B = 53°, x ? 7
B. B = 53°, x ? 2.8
C. B = 53°, x ? 3
D. B = 53°, x ? 7.3
Answer: D
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Describe the graph of the polar equation.r = 
A. Hyperbola passing through (6, 4) B. Line with slope 4 and y-intercept (0, -6) C. Line with slope 6 and y-intercept (0, -4) D. Ellipse centered at origin with intercepts (±4, 0) and (0, ±1)
Solve the problem.Below is a floor plan of a suite of offices. Place a door in one of the rooms so that a security guard can enter by the door marked "enter", pass through each door and lock it behind him, and then exit by the door you have placed in the plan. 
A. Place door in room E. B. Place door in room D. C. Place door in room A. D. Place door in room B.
The matrix is the final matrix form for a system of two linear equations in variables x1 and x2. Write the Solution of the system.
A. x1 = 3 x2 = 5 B. x1 = -5 x2 = -3 C. x1 = 5 x2 = t for any real number t D. x1 = 5 x2 = 3
Find the maximum or minimum value of the given objective function of a linear programming problem. The figure illustrates the graph of feasible points. 
z = x + 8y. Find maximum.
A. maximum: 20 B. maximum: 34 C. maximum: 27 D. maximum: 42