Solve the system.4x + 4y + z = -263x - 3y - z = -114x + y + 4z = -14
A. (2, -2, -5)
B. (-5, 2, -2)
C. (-5, -2, 2)
D. No solution
Answer: C
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Find an equation for the surface consisting of all points that are equidistant from the point (0,-2,0) and the plane y=2.
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Find the exact value. If any are not defined, write undefined.cot 270°
A. 0
B. 
C. Undefined
D. -1
Solve the problem.A coffee store has available 75 pounds of A grade coffee and 120 pounds of B grade coffee. These will be blended into 1 pound packages as follows: an economy blend that contains 4 ounces of A grade coffee and 12 ounces of B grade coffee and a superior blend that contains 8 ounces of A grade coffee and 8 ounces of B grade coffee. Using x to denote the number of packages of the economy blend and y to denote the number of packages of the superior blend, write a system of linear inequalities that describes the possible number of packages of each blend. Graph the system of inequalities. 
What will be an ideal response?
Round the decimal to the given place value.5.843 (nearest tenth)
A. 5.9 B. 5.7 C. 5.8