Solve the system of equations. x + y + z - w = 6 2x - y + 3z + 4w = -4 4x + 2y - z - w = -13 -x - 2y + 4z + 3w = 12
A. (4, -3, -5, 2)
B. 
C. (-4, 3, 5, -2)
D. No solution
Answer: C
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Solve the problem.Lookout station B is located 11 mi due east of station A. The bearing of a fire from A is 
and the bearing from B is 
Determine the distance from the fire to B (to the nearest tenth of a mile).
A. 17.9 mi B. 19.9 mi C. 35.8 mi D. 37.8 mi
Integrate the function f over the given region.f(x, y) = y2 ex4 over the triangular region in the first quadrant bounded by the lines 
and 
A. 
e
B. 27(e + 1)
C. 9(e - 1)
D. 
(e - 1)
Solve the problem.A square box with an open top is to be constructed from a rectangular piece of cardboard with side length 14 inches by cutting out equal squares of side length x at each corner and then folding up the sides. Write a completely factored polynomial whose values give the volume of the box.
A. 4x(7 - x)(7 + x) B. 4x(3.5 - x)(3.5 + x) C. 4x(3.5 - x)2 D. 4x(7 - x)2
Find the equation of the line through the given pair of points in standard form using only integers.(-5, 3) and (1, 6)
A. 3x - 6y = -33 B. 3x - 5y = -33 C. 6x - 6y = -33 D. 3x - 6y = -31