SOLUTION: The half-life of a certain radioactive material is 85 days. An initial amount of the material has a mass of 801 kg. Write an exponential function that models the decay of this mate

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Question 479450: The half-life of a certain radioactive material is 85 days. An initial amount of the material has a mass of 801 kg. Write an exponential function that models the decay of this material.
Then calculate how much radioactive material remains after 10 days . Round your answer to the nearest thousandth
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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The half-life of a certain radioactive material is 85 days.
An initial amount of the material has a mass of 801 kg.
Write an exponential function that models the decay of this material.
:
the radioactive decay formula A = Ao*2^(-t/h), where
A = Amt after t time
Ao = initial am
h = half-life of substance
t = time of decay
A = 801*2^(-t/85)
;
Then calculate how much radioactive material remains after 10 days .
Round your answer to the nearest thousandth
A = 801*2^(-10/85)
A = 801*.9217
A = 738.273 kg after 10 days