Answer:
Option B
Step-by-step explanation:
By the property of reflection,
If a function [tex]'f'[/tex] is reflected across [tex]x[/tex]-axis, new function [tex]'g'[/tex] will be defined by,
[tex]g(x)=-f(x)[/tex]
Therefore, equation of the function will be,
[tex]g(x)=-(3)^x[/tex]
Option B will be the correct option.
