The logarithmic function is the function of the form
[tex]y=\log_ax,[/tex]
where a is called the base and [tex]a>0,\ a\neq1.[/tex]
A. The function [tex]y=\log_3x[/tex] is logarithmic function, because [tex]3>0,\ 3\neq 1.[/tex]
B. The function [tex]y=3^x[/tex] is exponential function.
3. The function [tex]y=x+3[/tex] is linear function.
4. The function [tex]y=x^3[/tex] is cubic function.
Answer: correct choice is A
