A can of soda is placed inside a cooler. As the soda cools, its temperature $T(x)$ in degrees Celsius is given by the following function, where $x$ is the number of minutes since the can was placed in the cooler.

$T(x)=-12+36e^{-0\mathrm{.}38x}$

Find the initial temperature of the soda and its temperature after $18$ minutes.

Round your answers to the nearest degree as necessary.