Total revenue, in $millions, for apple computers was 42,905 in 2009, 65,225 in 2010, and 108,249 in 2011. the average growth rate of revenue during these three years is closest to:
$108249-$42905= $65344
$65344 divides by 3 since it is a three year period gives you the average rate of growth in $millions.
$21781.33333 in $millions
