Answer
$\displaystyle \lim_{t\rightarrow\infty}P(t)=\infty$
Amazon's revenue has no bounds in the years to come.
Work Step by Step
$t$ is "approaching $+\infty$" means that $t$ is assuming positive values of greater and greater magnitude.
See table below.
As $t$ assumes positive values of greater and greater magnitude, the function value grows without bound.
So, we write:
$\displaystyle \lim_{t\rightarrow\infty}P(t)=\infty$
Thus, Amazon's revenue has no bounds in the years to come.
