SOLUTION: The population of J-Town in 2019 was estimated to be 76,500 people with an annual rate of increase of 2.4%. Part A. Write an equation to model future growth. Part B. What is the

Algebra ->  Exponential-and-logarithmic-functions -> SOLUTION: The population of J-Town in 2019 was estimated to be 76,500 people with an annual rate of increase of 2.4%. Part A. Write an equation to model future growth. Part B. What is the       Log On


   



Question 1206651: The population of J-Town in 2019 was estimated to be 76,500 people with an annual rate of increase of 2.4%.
Part A. Write an equation to model future growth.
Part B. What is the growth factor for J-Town?
Part C. Use the equation to estimate the population in 2072 to the nearest hundred people.

Found 2 solutions by ikleyn, MathLover1:
Answer by ikleyn(52790) About Me  (Show Source):
You can put this solution on YOUR website!
.
The population of J-Town in 2019 was estimated to be 76,500 people with an annual rate of increase of 2.4%.
Part A. Write an equation to model future growth.
Part B. What is the growth factor for J-Town?
Part C. Use the equation to estimate the population in 2072 to the nearest hundred people.
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(A)  P(t) = 76500%2A%281%2B0.024%29%5Et = 76500%2A1.024%5Et,

     where t are years after 2019  (so 2020 is t= 1,  2021 is t=2  and so on . . . )


(B)  the growth factor is 1.024.


(C)  P(2072) = 76500%2A1.024%5E%282072-2019%29 = 76500%2A1.024%5E53 = 268,880.4  (approximately),

     and we say that the population will be about  268,900  to the nearest hundred people in 2072.

Solved.

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To see many other similar and different solved problems on population growth,  look into the lesson
    - Population growth problems
in this site.  The solutions there are given in compact and clear form;  to read them is a pleasure.

After reading it,  you will be prepared to solve million other similar problems
on population growth on your own,  without any help from outside.

Moreover,  after reading this lesson you will be able to teach others to this art.



Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!


Part A.
Write an equation to model future growth.
y=a%281%2Br%29%5Et
where a=76500 (starting amount)
r=0.024 (rate, convert from % to decimal)
t=time

y=76500%281%2B0.024%29%5Et

Part B. What is the growth factor for J-Town?
The %281%2B0.024%29=1.024+is the growth factor of the function.

Part C. Use the equation to estimate the population in 2072 to the nearest hundred people.
from 2019 t0 2072 is t=53
y=76500%281%2B0.024%29%5E53
y=268880.39...... round to whole number
y=268880