The rate of increase of the population of a certain city is proportional to the population. In 1970, the population was 50,000 and in 2000 it was 75,000. Find a function n(t)=n,e" that models the population after t years since 1970. а. b. What will the population be in 2030? С. How long will it take for the population to reach 300,000?

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