SOLUTION: A population growing at a rate of 2.1% per year from an initial population of 9000 will grow in years to an amount P=9000 x e^0.021t How many years will it take the popu

Algebra ->  Exponential-and-logarithmic-functions -> SOLUTION: A population growing at a rate of 2.1% per year from an initial population of 9000 will grow in years to an amount P=9000 x e^0.021t How many years will it take the popu      Log On


   

Question 1161070: A population growing at a rate of 2.1% per year from an initial population of 9000 will grow in years to an amount
P=9000 x e^0.021t

How many years will it take the population to triple?
Round your answer to the nearest integer.
please help!!!!!

years
Answer by josgarithmetic(39632) About Me  (Show Source):
You can put this solution on YOUR website!
cross%28P=9000+x+e%5E0.021t%29

P=9000e%5E%280.021t%29
-

When to triple?
e%5E%280.021t%29=3
ln%28e%5E%280.021t%29%29=ln%283%29
0.021t=ln%283%29
t=ln%283%29%2F0.021----------use calculator for the value.