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OpenStudy (anonymous):
Which function has an inverse function? a.f(x)=|x-4|+1 b.f(x)=25x^2+70x+49 c.f(x)=x^4 d.f(x)=x+3/7
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OpenStudy (jhannybean):
Oh hell, I read this question wrong, lol.
OpenStudy (mathmate):
Hint: All straight lines are one-to-one, so they always have inverses.
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