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OpenStudy (anonymous):
Which is a rational function? A. y=x^2-x+4 B. y=2/x C. y=(x-3^x)/x^2 D. y=(x-5)/2
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OpenStudy (anonymous):
I think both A and D are rational functions as both can be expressed as P(x)/Q(x) format. B and C are exponential functions. Not sure... some one pls validate :)
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