Solve the following inilial$-$value problem starting from $S_0=7.$ Ad what frne does $y^{\text{i}\text{n}\text{c}\text{r}\text{e}\text{a}\text{s}\text{e}}$ to $100$ or drop to $1?$ Assume that the time, $t,$ can never be negative.

$\frac{dy}{dt}=e^{-6t}$

$y=102$

Time when y increases to $100($enter NeA I y dees nat reach this value$)1721)$