Applications of Exponential Functions (Part 2)

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A number of examples of how exponential functions apply to exponential growth of bacteria, half-life of elements (exponential decay), the exponential decay of the value of new cars, or the growth rate of classic cars. The value of compound interest is also discussed.
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At 3:34, before you go on, the question asks you how there was an hour AGO, not LATER.

Shiilyf
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@Shi3i4lyf Oops. So I did. If you want to find the answer for an hour ago, simply plug in a negative exponent rather than a positive. A negative exponent will have the opposite effect.

davidtutorsmath