Pivot once about the circled element in the simplex tableau, and read the solution from the result. 
A. x3 = 5, x2 = -7, z = 10; x1, s1, s2 = 0
B. x3 = 10, x2 = 10, z = 7; x1, s1, s2 = 0
C. x3 = 10, x2 = 7, z = 10; x1, s1, s2 = 0
D. x3 = 5, x2 = -7, z = -10; x1, s1, s2 = 0
Answer: D
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A. 4 B. 8 C. 5 D. 2
At the given point, find the line that is normal to the curve at the given point.6x2y - ? cos y = 7?, normal at (1, ?)
A. y = -2?x + 3?
B. y = 
x - 
+ ?
C. y = - 
x + 
+ ?
D. y = 
x - 
+ ?
Use a graphing utility to find the equation of the line of best fit. Round to two decimal places, if necessary.
A. y = -6.8x + 150.7 B. y = -6.2x + 140.4 C. y = 6.2x - 140.4 D. y = 6.8x - 150.7
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A. $864; $2400 B. $72; $2400 C. $864; $3264 D. $72; $2472