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# Exponential Equations : Word Problem

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The population of the green deer in 1999 was 17000. In 2003 there were only 15000. Write an exponential equation to express the poulation decrease p(t) in terms of t years.

##### Solution Summary

A word problem is solved using exponential functions.

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So the population decreased from 17000 to 15000 in 4 years. That
is from 1999 to 2003.
The general exponential equation for this decrease is
p(t) = Ae^(b*t)
where A is the initial deer population and t is the time in years
b is called the rate of decrease....Note that b has to ...

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