Increased Percentage #6

Question

Assume the population of Lakeville is increasing at a rate of 9% per year.

 

If the population of Lakeville is 9,000 today, what will the population be in 4 years?

(Round to the nearest whole number and do not use commas.)

Answer 1

Increasing by 9% means the new population will be 109% of the original, or 1.09

 

P(t)=9000(1.09)^t

P(4)=9000(1.09)⁴

P(4)=12,704 (approx)