Find the LCD of the given rational expressions.
; 
A. q(q - 1)
B. -q(q - 1)
C. -q2 - 1
D. -q(q + 1)
Answer: B
Mathematics
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Sketch the graph of the parabola.y = - 
(x + 7)2 - 3
A. 
B. 
C. 
D. 
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Find the domain and the vertical asymptote of the function.f(x) = 4 - log2x
A. Domain: [0, ?); vertical asymptote: x = 0 B. Domain: [0, ?); vertical asymptote: none C. Domain: (4, ?); vertical asymptote: x = 4 D. Domain: (0, ?); vertical asymptote: x = 0
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