Exponential decay intro (8:11) A discussion on exponential growth and decay using 
and 
.- * Practice Recognizing exponential growth vs decay. (4 problems)
- Graphing exponential growth and decay (4:05) Graphing
and 
. - * Practice Graphing exponential growth and decay. (4 problems)
- Exponential growth & decay word problems (7:21)
- Suppose a radioactive substance decays at a rate of
per hour. What percent of the substance is left is left after 6 hours? - Nadia owns a chain of fast food restaurants that operated 200 stores in 1999. If the rate of increase is annually, how many stores does the restaurant operate in 2007?
- Suppose a radioactive substance decays at a rate of
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