Question

Suppose a city with population 500,000 has been growing at a rate of ​7% per year. If this rate​ continues, find the population of this city in 21 years?

Answer 1

2,070,281

Explanation:

let x = number of years

let y = population

Given:

• initial population = 500000
• rate of increase = 7%

y = 500000 × 1.07^x

when x = 21:

y = 500000 × 1.07^(21) = 2070281.187... = 2,070,281