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OpenStudy (anonymous):
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OpenStudy (anonymous):
f(x) = 2x+3 f(f(x)) = f(2x+3) = 2(2x+3) + 3 = 4x + 6 + 3 = 4x + 9 this is f composed of itself (f of f of x).
OpenStudy (anonymous):
So which is the answer because 2x+3 and 4x+9 are both choices.
OpenStudy (anonymous):
It could be 4x^2 + 12 x+9
OpenStudy (anonymous):
= 4x+9
OpenStudy (anonymous):
according to the problem, \[f(f(x))=4x+9\]
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OpenStudy (anonymous):
Thank you again. Your a life saver
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