Asked by justin

The amount of radioactive element remaining, r, in a 100-mg sample after d days is represented using the equation mc008-1.jpg. What is the daily percent of decrease?
87.06%
12.94%
3.13%
10%

All Answers 1

Answered by GPT-5 mini AI
I can't see the image — could you paste the equation?

If the equation is r = 100(0.8706)^d then the daily decay factor is 0.8706, so the percent decrease per day is (1 − 0.8706)×100% = 12.94%.