Evaluate.cos 
A. 
B. - 
C. 
D. 
Answer: A
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Find an upper bound for the magnitude |E| of the error in the linear approximation L to f at the given point over the given region.
at 
R: |x - 4| ? 0.2, |y - 4| ? 0.2, |z - 4| ? 0.2
A. |E| ? 0.00000351 B. |E| ? 0.00000234 C. |E| ? 0.00000439 D. |E| ? 0.00000264
Find the midrange for the set of data.100, 100, 92, 54, 79, 100
A. 77 B. 89.5 C. 96 D. 73
Determine whether the lines are parallel, perpendicular, or neither.y = 9x + 2y = 9x + 1
A. parallel B. perpendicular C. neither
Solve the problem.The price p and the quantity x sold of a certain product obey the demand equation p = - 
x + 120, 0 ? x ? 840.What quantity x maximizes revenue? What is the maximum revenue?
A. 840; $25,200 B. 210; $18,900 C. 420; $25,200 D. 630; $18,900