Respuesta :

Hello : 
find : g(x) if    f(g(x))=3x-7  and   f(x)=1/3x2

  f(g(x)) = 1/3(g(x))2 = 3x-7
solve :  1/3(g(x))2 = 3x-7
(g(x))2 = 9x-21
 g(x) = √(9x-21)
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