document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=544555>Question 544555</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find (g o f)(3) if g(x) = 3x and f(x) = x - 3 <BR>\n" );
document.write( "Need help solving, I see the formula, but don't get it.\r<BR>\n" );
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document.write( "(g o f)(3) = g(f(3)).\r<BR>\n" );
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document.write( "We need to find f(3) first.\r<BR>\n" );
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document.write( "f(x) = x - 3\r<BR>\n" );
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document.write( "f(3) = 3 - 3\r<BR>\n" );
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document.write( "f(3) = 0\r<BR>\n" );
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document.write( "We now know that f(3) = 0.\r<BR>\n" );
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document.write( "g(f(3)) = 3x\r<BR>\n" );
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document.write( "g(f(3)) = 3(0) \r<BR>\n" );
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document.write( "g(f(3)) = 0\r<BR>\n" );
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document.write( "So, (g o f)(3) = 0.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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