SAT Right triangles Question

The functions $f$ and $g$ are defined by the given equations, where $x\ge 0$ . Which of the following equations displays, as a constant or coefficient, the maximum value of the function it defines, where $x\ge 0$ ? I. $f(x)=16(1.25{)}^x+43$ II. $g(x)=6(0.75{)}^x$