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Mathematics 21 Online
OpenStudy (anonymous):

what is g(f(x)) if f(x)= 3x^2 and g(x)=2x

OpenStudy (anonymous):

Try doing: \[2(3x^2)\] Since you know what f(x) is, just plug it in for x in g(x).

OpenStudy (anonymous):

i got 600

OpenStudy (anonymous):

but the choices are a)6x^2 B)9x^2 c)12x^2 d)12x

OpenStudy (anonymous):

For this problem, you can't exactly get a numerical value as the answer, you can only simplify the equation.

OpenStudy (anonymous):

i got 12x

OpenStudy (anonymous):

I hate to do this, but the answer is \[6x^2\]

OpenStudy (anonymous):

oh ok

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