An unknown radioactive element decreases 12% of its amount every 5 days. What is exponential function ? that describes the amount left after t days? If there are 300g of the substance at present, how much is left after 30 days? (round off the value up to two decimal places)

Algebra and Trigonometry (6th Edition)
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ISBN:9780134463216
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ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Using the concept of exponential growth and exponential decay, solve the given problem. Show complete and systematic solutions. 

 

1. An unknown radioactive element decreases 12% of its amount every 5 days. What is
exponential function ? that describes the amount left after t days? If there are 300g of the
substance at present, how much is left after 30 days? (round off the value up to two decimal
places)

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