Use Cramer's rule to solve the linear system.
A. x = 9, y = -8, z = -9
B. x = 9, y = 8, z = 9
C. x = 8, y = 9, z = 8
D. x = 10, y = 6, z = 9
Answer: B
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A. 3 nickels B. 18 nickels C. 8 nickels D. 13 nickels
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