The given equations define the functions $f$ and $g$, where $x\geq 0$. Which of the following equations displays, as a constant or coefficient, the maximum value of the function it defines, where $x\geq 0$?

I. $f(x)=33(0.4)^{x+3}$

II. $g(x)=33(0.16)(0.4)^{x-2}$