12th Edition

ISBN: 9780135240687

Author: Lial

Publisher: PEARSON

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Textbook Question

Chapter 4.1, Problem 45E

Work the following problems. (See Examples 5 and 6.)

World Population There were fewer than a billion people on Earth when Thomas Jefferson died in 1826, and there are now more than 6 billion. If the word population continues to grow as expected, the population (in billions) in year t will be given by the function P ( t ) = 4.834 ( 1.01 ( t − 1980 ) ) . (Data from: U.S. Census Bureau.)

Estimate the world population in the following years.

2015

2020

2040

What will the world population be when you reach 65 years old?

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Chapter 4.1, Problem 44E

Chapter 4.1, Problem 46E

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Solution Summary: The author calculates the world population in the year 2015 if it can be approximated by the function P(t)=4.834

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