13. What is x1 = 9?
A.+9,-9
B.+9
C.-9
D.0
14. What is |0|?
A.0
B. +0
C.-O 0.X B. & C. -4
D.-12
15.|-4|+|+8|=
A.12
B.4
C.-4
D.-12
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13. What is x1 = 9?
A.+9,-9
B.+9
C.-9
D.0
14. What is |0|?
A.0
B. +0
C.-O 0.X B. & C. -4
D.-12
15.|-4|+|+8|=
A.12
B.4
C.-4
D.-12
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