Question:
The population $p(t)$ at time $t$ of a certain mouse species satisfies the differential equation $\frac{\mathrm{dp}(\mathrm{t})}{\mathrm{dt}}$ $=0.5 \mathrm{p}(\mathrm{t})-450$. If $\mathrm{p}(0)=850$, then the time at which the population becomes zero is :
Correct Option: , 2
Solution: