document.write( "Question 111350: Given f(x) = 3x + 3, find f(a + 1).\r
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Algebra.Com's Answer #81199 by jim_thompson5910(35256)\"\" \"About 
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\"f%28x%29+=+3x+%2B+3\" Start with the given function\r
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\n" ); document.write( "\n" ); document.write( "\"f%28a%2B1%29+=+3%28a%2B1%29+%2B+3\" Plug in x=a+1. In other words, replace each x with a+1\r
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\n" ); document.write( "\n" ); document.write( "\"f%28a%2B1%29+=+3a%2B3+%2B+3\" Distribute\r
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\n" ); document.write( "\n" ); document.write( "\"f%28a%2B1%29+=+3a%2B6\" Combine like terms
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