Question
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A country’s population and the growth rate in 2011 are given below. Use this information and an exponential model to estimate the country’s population in the specified year.
population million; growth rate percent; year, 2021
The size of the population in the 2021 will be about millith. of 28 points
(Round to the nearest hundredth as needed.

Ask by Rogers Floyd. in the United States
Mar 19,2025

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Answer

The estimated population in 2021 is approximately 167.53 million.

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Bonus Knowledge

To estimate the country’s population in 2021 using the exponential model, you can use the formula for population growth, which is given by:
Where:
  • is the initial population (144 million in 2011),
  • is the growth rate (1.526% or 0.01526 as a decimal),
  • is the number of years since the initial population (2021 - 2011 = 10 years),
  • is the base of the natural logarithm (approximately 2.71828).
Plugging in the values, we have:
Calculating gives approximately 1.164. Therefore:
Rounding this to the nearest hundredth gives a population estimate of about 167.62 million in 2021.
For fun facts, remember that the calculation assumes constant growth, which usually doesn’t happen in real life due to various factors like economic changes, migration patterns, or pandemics! It’s a simplified model, but it gives a decent estimate!
Also, if you’re interested in how different countries manage their population growth, there’s a fascinating realm of demographic studies and urban planning that delve into how societies adapt. Check out books like “The Population Bomb” by Paul Ehrlich or “The Future of Humanity” by Michio Kaku to explore these themes further!

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