Alejandra C.

asked • 11/04/19

A radioactive isotope has a half-life of 20 days, and decays continuously.

a. Express the amount of an initial 100-gram sample that will remain radioactive, 𝐴(𝑡), as a function of the number of days, 𝑡.

b.Based on our knowledge of the half-life, we would expect that after 40 days, 25 grams of the initial sample would remain active. Verify this with the function that you created by evaluating 𝐴(40). Show your computation.

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