Use the given growth rate to find the approximate doubling time and to predict the population in 50 years of a growingsuburban town (based on a current population of 100,000).
-Use the current annual growth rate which is about 3.1%.
A) 25 years; population in 50 years $= 630,783$
B) 18 years; population in 50 years $= 251,154$
C) 23 years; population in 50 years $= 464,052$
D) 33 years; population in 50 years $= 341,392$

Question

Use the given growth rate to find the approximate doubling time and to predict the population in 50 years of a growingsuburban town (based on a current population of 100,000).
-Use the current annual growth rate which is about 3.1%. 
A) 25 years; population in 50 years $= 630,783$
B) 18 years; population in 50 years $= 251,154$
C) 23 years; population in 50 years $= 464,052$
D) 33 years; population in 50 years $= 341,392$

Quizplus · Accepted Answer

The doubling time can be estimated using the Rule of 70: $ \frac{70}{3.1} \approx 22.58 $ years, which rounds to 23 years. Using the formula $ P = P_0(1 + r)^t $, where $ P_0 = 100,000 $, $ r = 0.031 $, and $ t = 50 $, the population in 50 years is approximately 464,052.

Use the Given Growth Rate to Find the Approximate Doubling =630,783= 630,783=630,783

Use the Given Growth Rate to Find the Approximate Doubling $= 630,783$