Question

A city's population grows by about 1% each year. If the city's population is 63,000 people

now, what will the population be in 4 years?

[Hint: use y = a (1 + r)]

What is a?

What is r?

What is t?

O years

63,000 people

1 year

people

2 years

people

3 years

people

4 years

people

Answer 1

a - city's population at year 0

r - rate of population increase

t - number of years

In four years, the population will be 65,558

Explanation:

y = a(1+r)^t

for year 1

y = 63,000(1+0.01)^1

y = 63,630

for year 2

y = 63,000(1+0.01)^2

y = 64,266

for year 3

y = 63,000(1+0.01)^3

y = 64,909

for year 4

y = 63,000(1+0.01)^4

y = 65,558