Answer
$f(x), g(x) $and $h(x)$
Work Step by Step
The function $y=e^x$ rises from left to right because it is a growing exponential function. It corresponds to $f(x)$ on the graph.
The function $y=e^{-x}$ decays from right to left because it is a decaying exponential function. It corresponds to $g(x)$ on the graph.
Finally, $y= -e^x$ corresponds to $h(x)$ on the graph.
