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The population of a community is known to increase at a rate proportional to the number of people present at time t. If an initial population P0 has doubled in 3 years, how long will it take to triple? How long will it take to quadruple? (Round your answer to 1 decimal place.)

The population of a community is known to increase at a rate proportional to the number of people present at time t. If an initial population P0 has doubled in 3 years, how long will it take to triple? How long will it take to quadruple? (Round your answer to 1 decimal place.)

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The population of a community is known to increase at a rate proportional to the number of people present at time t. If an initial population P0 has doubled in 3 years, how long will it take to triple? How long will it take to quadruple? (Round your answer to 1 decimal place.)

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