document.write( "Question 59569: Would someone be able to help me on this problem?\r
\n" ); document.write( "\n" ); document.write( " Given f(x) = -2x - 4, find f(-3)\r
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Algebra.Com's Answer #40817 by Edwin McCravy(20056) $\"\"$ $\"About$

You can put this solution on YOUR website!

Would someone be able to help me on this problem? \r\n" );
document.write( "Given f(x) = -2x - 4, find f(-3) \r\n" );
document.write( "Thanks so much,\r\n" );
document.write( "Ashley\r\n" );
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document.write( "f(x) = -2x - 4\r\n" );
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document.write( "Put parentheses around all x's that \r\n" );
document.write( "aren't already enclosed in parentheses:\r\n" );
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document.write( "f(x) = -2(x) - 4\r\n" );
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document.write( "Erase all the x's:\r\n" );
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document.write( "f(  ) = -2(  ) - 4\r\n" );
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document.write( "Put -3 in all the empty parentheses:\r\n" );
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document.write( "f(-3) = -2(-3) - 4  \r\n" );
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document.write( "Simplify the right side, leaving the left\r\n" );
document.write( "side as it is:\r\n" );
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document.write( "f(-3) = 6 - 4\r\n" );
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document.write( "f(-3) = 2\r\n" );
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document.write( "That's all there is to it!  It only \r\n" );
document.write( "amounts to substituting what is in the \r\n" );
document.write( "parentheses on the left for x in the right \r\n" );
document.write( "side. Then simplify.\r\n" );
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document.write( "Edwin

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