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The population P(t) at time t of a certa...

The population P(t) at time t of a certain mouse species satisfies the differential equation `(d p(t))/(dt) = 0.5 p(t) - 450`. If p(0) = 850, the time at which the population becomes zero is

A

`1ln18`

B

`ln9`

C

`(1)/(2)ln18`

D

`ln18`

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