document.write( "Question 122869: \r
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Algebra.Com's Answer #90186 by checkley71(8403)\"\" \"About 
You can put this solution on YOUR website!
f(x)=3x+1
\n" ); document.write( "f(a+3)=3(a+3)+1
\n" ); document.write( "f(a+3)=3a+9+1
\n" ); document.write( "f(a+3)=3a+10 answer.
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