Question

suppose the population of a certain city has been doubling every 30 years and the population was 48,000 in 1900. what will the population be in 2020?

Answer 1

768000

Explanation:

From 1900 to 2020 = 120 means that it doubles 4 times ( once every 30 years)

=> 48000 * 2 ^ 4 = 768000