Determine if the given ordered triple is a solution of the system.(-1, -3, 5)x - y + z = 7x + y + z = 1x + y - z = -9
A. solution
B. not a solution
Answer: A
Mathematics
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Graph the function. Specify the intervals over which the function is increasing and the intervals where it is decreasing.y = 
A. Increasing -? < x < 0 and 0 < x < ?
B. Decreasing -? < x < 0 and 0 < x < ?
C. Increasing -? < x < 0
Decreasing 0 < x < ?
D. Decreasing -? < x < 0
Increasing 0 < x < ?
Mathematics
Find the effective rate of interest.6
% compounded monthly
A. 6.39% B. 6.25% C. 6.29% D. 6.43%
Mathematics
The graphing calculator screens show a system and the point of intersection. Choose the screen which best represents the given system.x = 1y = 5
A. 
B. 
C. 
D. 
Mathematics
Determine whether the function is one-to-one.f(x) = 7
A. One-to-one B. Not one-to-one
Mathematics