document.write( "Question 135651: Hi,
\n" ); document.write( " Can you help me with this math problem? \r
\n" ); document.write( "\n" ); document.write( "13.) Find the function value. \r
\n" ); document.write( "\n" ); document.write( " Let f(x) =5x.Find f(-2)\r
\n" ); document.write( "\n" ); document.write( "The answer should be 1 over 25
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Algebra.Com's Answer #99384 by solver91311(24713)\"\" \"About 
You can put this solution on YOUR website!
Only if the function is acutually \"f%28x%29=5%5Ex\".\r
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\n" ); document.write( "\n" ); document.write( "If the function is \"f%28x%29=5x\", then \"f%28-2%29=5%28-2%29=-10\",\r
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\n" ); document.write( "\n" ); document.write( "But if \"f%28x%29=5%5Ex\", then \"f%28-2%29=5%5E%28-2%29\"\r
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\n" ); document.write( "\n" ); document.write( "Remember the rules for exponents: \"a%5E%28-n%29=1%2Fa%5En\", so:\r
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\n" ); document.write( "\n" ); document.write( "\"f%28-2%29=5%5E%28-2%29=1%2F5%5E2=1%2F25\"\r
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\n" ); document.write( "\n" ); document.write( "Hint: When indicating something should be raised to a power, use the caret mark \"^\" (shift-6). x^2 is x squared, 5^x is 5 to the x power.
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