Find all numbers that must be excluded from the domain of the rational expression.
A. x ? -2
B. x ? 6, x ? 2
C. x ? -6, x ? -2
D. x ? 0
Answer: B
Mathematics
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Graph the fraction on a number line.- 
A. 
B. 
C. 
D. 
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? is a central angle that cuts off an arc of length s. Find the radius of the circle if ? = 153°, s = 5 km . ?
A. 2.07 km B. 1.97 km C. 1.87 km D. 2.27 km E. 1.57 km
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Evaluate the integral.
A. - 
B. - 
C. - 
D. - 
Mathematics
Solve the system by graphing.
A. {(x, y) 
B. {(1, 1)}
C. {(-1.5, -1)}
D. ?
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