Evaluate the following expression.
?
?
?
A. -6
B. 6
C. 4
D. 5
E. -5
Answer: D
Mathematics
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Graph each system of inequalities and shade the portion on the graph represented by the solution set.2x - y > 4 x ? 4
A. 
B. 
C. 
D. 
Mathematics
Indicate whether the graph represents a one-to-one function.
A. No B. Yes
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Solve the system of equations. x + y + z = -12 x - y + 5z = -143x + y + z = -20
A. {(-3, -4, -5)} B. ? C. {(-4, -5, -3)} D. {(-3, -5, -4)}
Mathematics
Solve the equation.4-x = 
A. 
B. {-2}
C. 
D. {2}
Mathematics