## Algebra 2 (1st Edition)

Approximately $895$ million camera phones were shipped in $2002$.
$x=0$ 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. $y\approx 895$