The radioactive isotope potassium-40 is used to date very old remains. The proportion of potassium-40 that remains after t million years is  e−0.00054t.  Use this function to estimate the age of the following fossil.A skeleton of an early human ancestor was discovered. Use the formula to estimate its age if rocks near the remains contained 99.73% of their original potassium-40. (Round your answer to one decimal place.) million years

Question

The radioactive isotope potassium-40 is used to date very old remains. The proportion of potassium-40 that remains after t million years is 

e−0.00054t.

 Use this function to estimate the age of the following fossil.

A skeleton of an early human ancestor was discovered. Use the formula to estimate its age if rocks near the remains contained 99.73% of their original potassium-40. (Round your answer to one decimal place.)
 million years

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