Estimate the bird population 7 years from now

Question

A certain species of bird was introduced in a certain county 25 years ago. Biologists observe that the population doubles every 10 years, and now the population is 17,000.

Answer 1

It obeys the equation

 

P(t) = P₀ (2)^t/10

 

where t is the number of years elapsed from when the population was P₀.

 

Now:

 

P₀ = 17,000

 

7 years from now:

 

P(7) = 17,000 (2)^7/10 ≅ 27,617