document.write( "Question 824047: Along with incomes peoples charitable contributions have steadily increased over the past years. The table below shows the average deduction for charitable contributions reported on individual income tax returns for the period 2007 to 2012. Find the average rate of change between 2009 and 2011.\r
\n" ); document.write( "\n" ); document.write( "Year. Contribution
\n" ); document.write( "2007 $1980
\n" ); document.write( "2008 $2350
\n" ); document.write( "2009 $2490
\n" ); document.write( "2010 $2760
\n" ); document.write( "2011 $3060
\n" ); document.write( "2012 $3120
\n" ); document.write( "

Algebra.Com's Answer #496046 by TimothyLamb(4379)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "(2490 + 2760 + 3060)/3 = 2770
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