document.write( "Question 48354: Given f(x)=3x+1, find f(a+3). \n" ); document.write( "
Algebra.Com's Answer #32012 by Nate(3500)\"\" \"About 
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f(x) = 3x + 1
\n" ); document.write( "f(a + 3) = 3(a + 3) + 1 = 3a + 9 + 1 = 3a + 10
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