Question

the population of a town increases by 20 % every year. if its present population is 432000 find its population 2 years ago

Answer 1

Thats ur answer
Hope it helps

Answer 2

Answer:

Population after 2 years be 622080 .

Step-by-step explanation:

The  exponential increasing function is given by

$y = a (1 + r)^{t}$

Where a is the initial value , r is the rate of interest in the decimal form and t is the time in years .

As given

The population of a town increases by 20 % every year.

if its present population is 432000 .

a = 432000

20% is written in the decimal from .

$= \frac{20}{100}$

= 0.20

r = 0.20

t = 2 years

Putting all the values in the exponential function .

$y = 432000(1 + 0.20)^{2}$

$y = 432000(1.20)^{2}$

y = 432000 × 1.44

y = 622080

Therefore the population after 2 years be 622080 .