Write the system of equations associated with the augmented matrix. Do not solve.
A. 6x + 4y - 9z = -9
-6x - 9y = -2
-7x + 9y = 5
B. 6x + 4y - 9z = -9
-6x - 9y - 2z = 0
-7x + 9y + 5z = 0
C. 6x + 4y - 9z = -9
-6x - 9y = -2
-7x + 9z = 5
D. 6x + 4y - 9z = -9
-6x + -9z = -2
-7x + 9y = 5
Answer: C
Mathematics
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Find the inverse of the function.f(x) = -x2 + 12, x ? 0
A. f-1(x) = - 
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