Answer
Does not make sense.
Work Step by Step
The graph of f(x) is obtained by vertically stretching the graph of $ f_{1}(x)=2^{x}$ by a factor 3.
The asymptote remains $ y=0$, because to the far left,
values of y-coordinates, $ y=f_{1}(x)$, are near zero.
Multiplying them with 3, they are still nearing zero, not three.
Does not make sense.