Solve the equation.
- 
= 1
A. {3, -1}
B. {3}
C. ?
D. {-3, -1}
Answer: A
Mathematics
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How many employees earn at least $4 and less than $6 an hour?
A. 10 B. 20 C. 34 D. 22
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Use the Laws of Exponents to simplify. Write the answer with positive exponents. All variables are nonzero.
A. 
B. 4y
C. 2x6y
D. 
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Simplify the expression.
? 
A. 33
B. 4
C. 16
D. 
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