Mathematics, 14.08.2021 18:50 Allybubbs

1. Professor Curie is using the radioactive isotope Francium-223 in her research. This Isotope has a half-life of 22 minutes, which means that every 22 minutes the sample has half the radioactivity it did in the previous interval. If Professor Curle has 15 grams of Francium-223, which explicit formula describes how the isotope decays?
O = 22(0.5) -
O = 15(22)"-1
O=15(0.5)-1
O = 22(0-5)-2

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