SOLUTION: 85 grams of radioactive material will decay at a rate of 45% per day. How many grams will be left after 6 days? Round to the nearest hundredth. This has to do with scientific no

Question 611350: 85 grams of radioactive material will decay at a rate of 45% per day. How many grams will be left after 6 days? Round to the nearest hundredth.
This has to do with scientific notation
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
85 grams of radioactive material will decay at a rate of 45% per day. How many grams will be left after 6 days? Round to the nearest hundredth.
This has to do with scientific notation
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If 45% decays, 55% remains after each year.
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A(t) = x*(0.55)^t
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A(6) = 85*(0.55)^6
= 0.02353
= 2.353x10^-2 grams
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Cheers,
Stan H.
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