Answer
84.25 billion dollars
This means, in the 11th year after 2009 (or 2020), Microsoft might expect to have an estimated 84.25 billion dollars in revenue.
Work Step by Step
$y=19/4*x+43$
$x=11$
$y=19/4*x+32$
$y=19/4*11+32$
$y=209/4+32$
$y=52.25+32$
$y=84.25$
