By what percent did the population increase by each year

Question

the population of winnemucea,Nevada can be modeled by P=619(1.12)^t where t=0 refers to 2009

Answer 1

That would be 12%.

 

One way is to check values, for example use t = 1 and t = 2 to get corresponding values for P. Dividing the two P₂ by P₁ will give you 1.12. Meaning P₂ is 112% of P₁ with the INCREASE (removing the 100%) of 12%.

 

Another way is through common sense. You're multiplying the initial value by 1.12 every year meaning 112%, from that you can already see the increase of 12%.