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The population of a community is known to increase at a rate proportional to the number...

The population of a community is known to increase at a rate proportional to the number of people present at time t. The initial population P0 has doubled in 5 years.
Suppose it is known that the population is 9,000 after 3 years. What was the initial population P0? (Round your answer to one decimal place.)

P0 = ?????

What will be the population in 10 years? (Round your answer to the nearest person.)

?????? person

How fast is the population growing at t = 10? (Round your answer to the nearest person.)

???  persons/year

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