Find the domain of the rational expression.
A. {x|x is a real number and x ? 7}
B. {x|x is a real number}
C. {x|x is a real number and x ? 3}
D. {x|x is a real number and x ? 3 and x ? 7}
Answer: B
Mathematics
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Graph the numbers on the real number line.x < -6
A. 
B. 
C. 
D. 
Mathematics
Determine which of the given numbers are in the domain of the variable.
; x = -5, x = 0, x = 5, x = 10
A. x = 0, x = 5, x = 10 B. x = -5, x = 0, x = 5 C. x = 0 D. x = -5, x = 0, x = 5, x = 10
Mathematics
Factor the polynomial completely.2y10 - 11y5 - 40
A. (2y5 + 5)(y5 - 8) B. y8(2y + 5)(y - 8) C. (2y5 + 8y3 + 5)(y5 - 5y3 - 8) D. (2y5 - 5)(y5 + 8)
Mathematics
Solve the system of equations by substitution.3x + y = 132x - 7y = 24
A. (5, 2) B. (-5, -2) C. (-5, 2) D. (5, -2)
Mathematics