In 2000 the worlds population was about 6.08 billion and the exponential growth rate was 1.26% per year.

a)what is the worlds population in 2012?

b)in what year will the worlds population be double the amount from the year 2000?

a.the year 2000 will give 2000+w

the population will be 6.08*1.0126^w

6.08*1.0126*12=12.16

b. the log to be taken on both sides , shift the w and divide to get w as 55.3

this gives 2000+55.3

the year is 2055

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