<PRE><B>Question 995244</B>
state domain
find composite functions
g(x)=3x 
f(x)= 6x+9 
(a)gog(x)= g[g(x)] = g(3x) = 3(3x) = 9x
Domain:: All Real Numbers
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(b)fof(x)= f[f(x)] = f[6x+9] = 6(6x+9)+6 = 36x+60
Domain:: All Real Numbers
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(c)fog(x)= f[g(x)] = f[3x] = 6(3x)+9 = 18x+9
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(d) gof(x)= g[f(x)] = g(6x+9) = 3(6x+9) = 18x + 27
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Cheers,
Stan H.
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