If a city that currently has a population of 1000 triples in size every 8 years, what will the population be in 24 years and is the population growth modeled by a linear function or an exponential function?

Respuesta :

24 years=8+8+8 3 times tripled
So 1,000×3^(3)=27,000

Answer:

After 24 years population of the city will be 27000.

Step-by-step explanation:

Since the population of a city gets tripled in 8 years means the sequence formed is an exponential function.

Now the function will be [tex]P=P_{0}(r)^{kt}[/tex]

Here P = Population after time t

P0 = initial population

r = common ratio

k = constant

t = period

Now we put the values in the equation.

[tex]3000=1000(3)^{8k}[/tex]

[tex]3^{1}=3^{8k}[/tex]

8k = 1

[tex]k=\frac{1}{8}[/tex]

Now we have to find the population after 24 years

[tex]P=1000(3)^{\frac{24}{8}}=1000(3)^{3}=27000[/tex]

Therefore after 24 years population of the city will be 27000.