Solve the system of equations.-13 + 4z = 3(x - 2y)3(x - 4y - z) = -18-3(2x + y) + 3z = 6
A. {(-1, 3, 3)}
B. {(-1, 3, 1)}
C. {(-1, -3, 1)}
D. {(-1, 1, 1)}
Answer: D
Mathematics
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Answer the question.The following table gives the electricity usage (in kilowatt hours) for the Peters family for six months.
What is the average electricity usage for the months February through May?
A. 955.1 kwh B. 952.082 kwh C. 955.89 kwh D. 953.11 kwh
Mathematics
Graph the list of integers on the number line.-9, -7, -5, -3 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Determine whether (7, 2, -5) is a solution of the system 3x - 8y + z = 0 2x + 4y - 3z = 37 -x + 2y - z = 2.
A. Yes B. No
Mathematics
Use a grapher to help determine whether or not the given functions are inverses of each other.f(x) = 0.625x1/2 + 2.37; g(x) = 1.6(x2 - 2.37), x ? 0
A. Yes B. No
Mathematics