The population of the world was 7.1 billion in 2013, and the observed relative growth rate was 1.1% per year.

(a) Estimate how long it takes the population to double. (Round your answer to two decimal places.)

_______yr

(b) Estimate how long it takes the population to triple. (Round your answer to two decimal places.)

________yr

3 answers

(a) find t where 1.011^t = 2

7.26

a=63.01

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