Answer
$$\color{blue}{{$}801.9\text{ billion}}$$
Work Step by Step
We are given a formula prediction the cost, $y$ of healthcare in billions, $x$ years since $1990$:
$$y = 1.016x^2 + 12.49x + 197.8$$
To find the cost for the year $2009$:
$y = 1.016(2009-1990)^2 + 12.49(2009-1990) + 197.8$
$y = 1.016(19)^2 + 12.49(19) + 197.8$
$y = 1.016(361) + 12.49(19) + 197.8$
$y = 366.776 + 237.31 + 197.8$
$y=801.886$
Round to the nearest tenth
$$\color{blue}{{$}801.9\text{ billion}}$$
