How many years?

Question

the population of a southern city follows exponentia law. If the population doubled in size over 26 months and the current population is 30,000 what will the population be 4 years from now?

Answer 1

P(t)=P(0)e^r*t

 

60000=30000 * e^(26/12)*r

2=e^(13/6)*r

Solve for r and substitute in the equation below.

P in four years

=30000*e^4*r