Substitute 8 for t and we get A(t)= 500e^-.256.
Remember e^-.256 is just a number for you to find in your calculator. It is .774141
So our answer is 387.07 grams
Amy G.
asked 04/09/19A sample of 500 grams of radioactive lead -210 decays to polonium -210 according to the function A(t) = 500e^(-.032t) where t is time in years. Find the amount of radioactive lead remaining after 8 years.
Substitute 8 for t and we get A(t)= 500e^-.256.
Remember e^-.256 is just a number for you to find in your calculator. It is .774141
So our answer is 387.07 grams
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