Write the matrix equation as a system of linear equations without matrices.
= 
A. 3x1 - 3x2 + 5x3 = - 2
5x1 + 7x3 = 4
3x1 + 6x2 = 2
B. 3x1 + 3x2 + 5x3 = - 2
5x1 + 7x3 = 4
3x1 + 6x2 = 2
C. 3x1 + 3x2 + 5x3 = 2
5x1 + 7x3 = 4
3x1 + 6x2 = 2
D. 3x1 + 3x2 + 5x3 = - 2
5x1 + 7x3 = - 4
3x1 + 6x2 = - 2
Answer: B
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Sketch the region which is defined by the given conditions.? ? ? ? 
, r = -4
A. 
B. 
C. 
D. 
Decide whether or not the matrices are inverses of each other.
and 
A. No B. Yes
Factor out the largest possible common factor.36m9 - 40m7 + 12m2
A. -4m2(9m7 + 10m5 - 3) B. m2(36m7 - 40m5 + 12) C. 4m2(9m7 - 10m5 + 3) D. 4(9m9 - 10m7 + 3m2)
Provide an appropriate response.According to the rules for the order of operations, what should be the first step when simplifying the expression [-4 + (-7 + 5)] + (-6 + 8)?
A. find the sum of -7 and 5 B. find the sum of -4 and -6 C. find the sum of 5 and -6 D. find the sum of -4 and -7