Graph the system of inequalities.x + 2y ? 2 x + y ? 0
A. 
B. 
C. 
D. 
Answer: A
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Evaluate the expression.71
A. 7
B. 1
C. -7
D. 
Find the gradient field F of the function f.f(x, y, z) = z sin (x + y + z)
A. F = -z cos(x + y + z)i - z cos(x + y +z)j + (sin(x + y + z) - z cos(x + y + z))k B. F = cos xi + cos yj + (sin z + z cos z)k C. F = -cos xi - cos yj + (sin z - z cos z)k D. F = z cos(x + y + z)i + z cos(x + y +z)j + (sin(x + y + z) + z cos(x + y + z))k
Provide an appropriate response.Find the dual problem to the following: A company has two different locations to assemble three different models of PCs. The table below summarizes the daily production capacity, the minimum number of each type needed, and the daily operating costs for each location. What is the number of days that each location needs to operate in order to fill the orders at minimum cost. 
What will be an ideal response?
Provide an appropriate response.Explain the error in the following: log3 2 + log3 M = log3 (2 + M).
What will be an ideal response?