OpenStax, Algebra and Trigonometry 2e §6.7 Exponential and Logarithmic Models · Exercise 37 · Algebra · Exponentials & logarithms

Exponential and Logarithmic Models · Exercise 37

Use this scenario: A tumor is injected with $0.5$ grams of Iodine-125, which has a decay rate of $1.15$ per day.

A scientist begins with $250$ grams of a radioactive substance. After $250$ minutes, the sample has decayed to $32$ grams. Rounding to five decimal places, write an exponential equation representing this situation. To the nearest minute, what is the half-life of this substance?

~8 minWritten answer · compare with the solution

OpenStax, Algebra and Trigonometry 2e · §6.7 Exponential and Logarithmic Models · Exercise 37

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