Find the equation of the tangent plane (or tangent "hyperplane" for a function of three variables) at the given point p.f(x, y, z) = 3x2 - 3y2 + yz2, p = (-1, 1, -1)
A. w = -6x - 6y - 2z - 2
B. w = -6x - 5y - 2z + 4
C. w = -6x - 5y - 2z - 2
D. w = -6x - 5y + 2z - 2
Answer: C
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What will be an ideal response?
Find the standard deviation for each data set. Round to one more place than the data.196, 205, 215, 185, 229, 278, 165
A. 30.2 B. 12.7 C. 36.2 D. 33.1
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? 
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