Sequences and Series Question
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Grade 10 Sequences and Series CCSS: HSF-BF.A.2
A certain substance exhibits radioactive decay. 18 hours after the initial amount was left out, there is 12 grams of the substance remaining. 18 hours later there is 10.2 grams remaining, and then 8.67 grams 18 hours after that. About how much of the substance is left after 12 days and 18 hours since the starting amount?
- 1.23 g
- 1.05 g
- 0.89 g
- 0.64 g