(Solved): A tank contains 9000L of pure water. Brine that contains 40g of salt per liter of water is pump ...

A tank contains $9000\mathrm{L}$ of pure water. Brine that contains $40\mathrm{g}$ of salt per liter of water is pumped into the tank at a rate of $25\mathrm{L}/\min$. The concentration of salt after $t$ minutes (in grams per liter) is $C(t)=\frac{40t}{360+t}$ As $t??$, what does the concentration approach? $\mathrm{g}/\mathrm{L}$ 4. [0/1.5 Points] SCALCET8 2.6 .072 . A graphing calculator is recommended. For the limit ${\lim }_{x?=}\frac{1?7x}{\sqrt{x^2+1}}=?7$ Wilistrate this definition by finding the smallest integer values of $N$ that correspond to $?=0.1$ and $?=0.05$. $\begin{array}{l}?=0.1N=\\ c=0.05N=\end{array}$