Answer
Approximately $895$ million camera phones were shipped in $2002$.
Work Step by Step
$x=0$ in $1997$,
$2002-1997=5$ years have passed, so $x=5$.
$ y=1.28e^{1.31x}\qquad$...Substitute $5$ for $x$ in the given function
$ y=1.28e^{1.31\cdot 5}\qquad$...simplify.
$ y=1.28e^{6.55}\qquad$...use calculator to solve.
$y\approx 895$
