Answer: SECOND OPTION.
Step-by-step explanation:
Below are shown some transformations for a function f(x):
If [tex]df(x)[/tex] and [tex]d>1[/tex], then the function is stretched vertically by a factor of [tex]d[/tex].
If [tex]df(x)[/tex] and [tex]0<d<1[/tex], then the function is compressed vertically by a factor of [tex]d[/tex].
By definition Exponential function have the following form:
[tex]f(x)=b^x[/tex]
Where [tex]b>0[/tex]
Based on the explained above, you can conclude that the function [tex]y=3*2^x[/tex] is an exponential function and it is stretched vertically by a factor of 3 ([tex]d=3[/tex]).
