document.write( "Question 571039: If f(x)= x^2 + 3, g(x)=4x, the value of g(f(6)) is ? \n" ); document.write( "
Algebra.Com's Answer #367907 by nyc_function(2741)\"\" \"About 
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First find f(6).\r
\n" ); document.write( "\n" ); document.write( "f(6) = (6)^2 + 3\r
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\n" ); document.write( "\n" ); document.write( "f(6) = 36 + 3\r
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\n" ); document.write( "\n" ); document.write( "f(6) = 39\r
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\n" ); document.write( "\n" ); document.write( "Now plug 39 into g(x).\r
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\n" ); document.write( "\n" ); document.write( "g(x) = 4x \r
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\n" ); document.write( "\n" ); document.write( "g(f(6)) = 4x\r
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\n" ); document.write( "\n" ); document.write( "g(39) = 4(39)\r
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\n" ); document.write( "\n" ); document.write( "The answer is 156.\r
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