Question

The population of a town increases at the rate of 5 % every year.The present population is 8000.In how many years it will become 9200?

Answer 1

please help me

Answer 2

8000 (1+.05)^y = 9200
1.05^y=9.2/8
y log(1.05)=log(9.2/8)
y=2.86

Answer 3

(1+.05)
from where it comes?

Answer 4

ok i got it ,thanks

Answer 5

start 8000
first year 8000(1+.05)
second year 8000(1+.05)(1+.05)=8000(1+.05)^2
General 8000(1+.05)^y
the 1+.05 represents the growth per year