Lemma
MediumExponentials & logarithms
OpenStax, Algebra and Trigonometry 2e §6.7 Exponential and Logarithmic Models · Exercise 35 · Algebra · Exponentials & logarithms

Exponential and Logarithmic Models · Exercise 35

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

To the nearest day, how long will it take for half of the Iodine-125 to decay?

~8 minWritten answer · check your work with Lemma

OpenStax, Algebra and Trigonometry 2e · §6.7 Exponential and Logarithmic Models · Exercise 35

Stuck? A gentle nudge

No hints for this one.

Something off?
Workspace
Your working

Check your full solution

Attach photos of your pages (up to 3) or one PDF — or check what you typed above. Lemma reads the work and verifies the reasoning, not just the answer.

Your first check today doesn't need an account.

Your photos and PDFs are read once and not stored — only the transcription is kept.