document.write( "Question 42990: Given f(x)= 3x+3, find f(a+1). \n" ); document.write( "
Algebra.Com's Answer #28094 by Nate(3500)\"\" \"About 
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f(x) = 3x + 3
\n" ); document.write( "f(a + 1) = 3(a + 1) + 3
\n" ); document.write( "f(a + 1) = 3a + 3 + 3
\n" ); document.write( "f(a + 1) = 3a + 6
\n" ); document.write( "
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