document.write( "Question 1065645: f(x)=1/(x-4) g(x)=4x+9\r
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Algebra.Com's Answer #680830 by Edwin McCravy(20056) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "f∘g(x) is read \"f of (g of x)\".\r\n" );
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document.write( "If means the same as \r\n" );
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document.write( "To get it, substitute what g(x) equals, for x in what\r\n" );
document.write( "f(x) equals.  Then simplify.\r\n" );
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document.write( "We start with f(x)\r\n" );
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document.write( "Then we take what g(x) equals, which is (4x+9), and\r\n" );
document.write( "substitute it for x in , like this: \r\n" );
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document.write( "So we have:\r\n" );
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document.write( "f∘g(x) = \r\n" );
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document.write( "Then we simplify\r\n" );
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document.write( "f∘g(x) =  \r\n" );
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document.write( "f∘g(x) = \r\n" );
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document.write( "That's the answer.\r\n" );
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document.write( "To find f∘g(5), we merely substitute 5 for x\r\n" );
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document.write( "f∘g(5) =  and simplify\r\n" );
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document.write( "f∘g(5) = \r\n" );
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document.write( "f∘g(5) = \r\n" );
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document.write( "Be sure to watch this youtube video:\r\n" );
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document.write( "https://www.youtube.com/watch?v=S4AEZElTPDo\r\n" );
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document.write( "Edwin

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