document.write( "Question 722007: I multiplied my age by 4, added 20, divided by 2, and then subtracted twice my age. What number did I finally get? \n" ); document.write( "
Algebra.Com's Answer #442585 by josgarithmetic(39617)\"\" \"About 
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Let p = someone's age.\r
\n" ); document.write( "\n" ); document.write( "\"A%28p%29=%284p%2B20%29%2F2-2p\"
\n" ); document.write( "=(2p+10)-2p
\n" ); document.write( "=2p+10-2p
\n" ); document.write( "=\"highlight%2810%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"A%28p%29=10\", no matter what the value of p used. What is the predictive value or meaning of that function?
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