math problem for school

Question

A town has a population of 17000 and grows at 3% every year. What will be the population after 7 years, to the nearest whole number

Answer 1

At the end of a year, the population will 1.03 times what it was at the start of the year, so

P(t) = P₀(1.03)ⁿ

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

P(7) = 17,000 (1.03)⁷ = 20,908