Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. x + y + z + w = 8 3x + 2y + z + 4w = 214x + 4y + 5z + 8w = 302x + 3y + 6z + 9w = 15
A. {(-3, 16, -6, 1)}
B. {(-6w + 3, 9w + 7, -4w - 2, w)}
C. {(5w + 11, -3w - 7, -3w + 4, w)}
D. ?
Answer: B
Mathematics
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Find the slope of the line tangent tangent to the graph a the given point. y = -5x - 7, x = 2
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Use a graphing calculator or computer to determine which of the given viewing windows displays the most appropriate graph of the specified function.f(x) = 
A. [-5, 0] by [-10, 10] B. [-5, 5] by [-10, 10] C. [0, 5] by [-10, 10] D. [-2, 2] by [-10, 10]
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(Write as a percent.)
A. 6%
B. 7
%
C. 0.67%
D. 6
%
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A. 25 B. 23 C. 22 D. 20
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