document.write( "Question 242671: F(3)=3x-4+7x= \n" ); document.write( "
Algebra.Com's Answer #177649 by rapaljer(4671)\"\" \"About 
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F(x) = 3x -4+7x
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\n" ); document.write( "\n" ); document.write( "F(3) means to substitute 3 in place of the x!\r
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\n" ); document.write( "\n" ); document.write( "F(3) = 10*3-4
\n" ); document.write( "F(3)=30-4=26\r
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\n" ); document.write( "\n" ); document.write( "Dr. Robert J. Rapalje, Retired
\n" ); document.write( "Seminole State College of Florida
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