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# Increase in population of United States

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129. Population of the United States. In 2006 the population
of the United States was 300.2 million (U.S. Census
Bureau, www.census.gov). If the population continues to
grow at an annual rate of 1.05%, then the population in
the year 2020 will be 300.2(1.0105)14 million.
a) Evaluate the expression to find the predicted population
in 2020 to the nearest tenth of a million people.
b) Use the accompanying graph to estimate the year in
which the population will reach 400 million people.

130. Population of Mexico. In 2006 the population of
Mexico was 107.4 million. If Mexico's population continues
to grow at an annual rate of 1.43%, then the population
in 2028 will be 107.4(1.0143)14 million.
a) Find the predicted population in 2020 to the nearest
tenth of a million people.
b) Use the result of Exercise 129 to determine whether
the United States or Mexico will have the greater
increase in population between 2006 and 2020.

Millions years since 2006
450 40
400 25
300 15

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#### Solution Preview

129. Population of the United States. In 2006 the population of the United States was 300.2 million (U.S. Census Bureau, www.census.gov). If the population continues to grow at an annual rate of 1.05%, then the population in the year 2020 will be 300.2(1.0105)^14 million.

a) Evaluate the expression to find the predicted population ...

#### Solution Summary

Evaluate the expression to find the predicted population in 2020 to the nearest tenth of a million people.

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