Respuesta :

gmany

Answer:

[tex]\large\boxed{f(x)=3^x}[/tex]

Step-by-step explanation:

[tex]3=3^1\\\\9=3^2\\\\27=3^3\\\\81=3^4\\\\\text{Therefore the exponential function has the equation:}\\\\f(x)=3^x[/tex]