Answer
$F.$
Work Step by Step
This graph is similar to the graph of figure 21, $f(x)=3^{x}$,
but its y-intercept $(0,1)$ is shifted to the right by 1 unit.
Shifting f(x) by 1 unit to the right we obtain $f(x+1)$
so we look for the form
$ \quad y=f(x+1)=3^{x+1}\qquad$... choice $F.$
