Solve.
= 
A. 13
B. 30
C. 
D. 60
Answer: B
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Solve the linear system using an inverse matrix.x + 2y + 3z = -12x + y + z = 1x - 2z = 10
A. (18, -21, 4) B. (-12, 0, 0) C. (17, -33, 4) D. (-10, -11, 0)
Solve the problem.The hyperbola 
- 
= 1 is shifted down 4 units and right 5 units. Find an equation for the new hyperbola and find the new vertices.
A. 
- 
= 1; vertices: (5 ± 
, -4 )
B. 
- 
= 1; vertices: (5, -4 ± 
)
C. 
- 
= 1; vertices: (5, -4 ± 
)
D. 
- 
= 1; vertices: (5 ± 
, -4 )
Solve the problem.Find an Euler path for the following graph by labeling the edges 1, 2, 3, and so on in the order in which they can be traveled. 
A. none of these
B. 
C. 
D. 
E. 
Determine whether the function is invertible. If it is, find the inverse.{(-8, 3), (-7, 3), (-6, 6), (-5, 9)}
A. {(3, -8), (-7, 6), (-6, 9)} B. {(-8, 9), (-8, 6), (-6, -7)} C. {(3, -8), (9, 6), (-6, -7)} D. Not invertible