Question: The half-life of radium-226 is 1620 yr. a. Write a function that relates the amount s of a sample of radium-226 remaining after t years.

The half-life of radium-226 is 1620 yr.
a. Write a function that relates the amount s of a sample of radium-226 remaining after t years.
b. After 1000 yr, how much of a 500 g sample of radium-226 will remain?
c. How long will it take for a 3 kg sample of radium-226 to decay so that only 10 g remains?

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