.
grams remains after 1-st half-life period
grams remains after 2-nd half-life period
grams remains after 3-rd half-life period
grams remains after 4-th half-life period
Now use your calculator.
Was my explanation clear and useful to you ?
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To learn more on radioactive decay problems, look into the lesson
- Radioactive decay problems
in this site.
Also, you have this free of charge online textbook in ALGEBRA-I in this site
- ALGEBRA-I - YOUR ONLINE TEXTBOOK.
The referred lesson is the part of this online textbook under the topic "Logarithms".
Save the link to this online textbook together with its description
Free of charge online textbook in ALGEBRA-I
https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson
to your archive and use it when it is needed.