Mathematics
Mathematics, 27.03.2020 19:57, kendallnowell18

The amount of a radioactive substance decreases by 10% every
12 hours. Currently the amount of substance is 100 grams. If n is
a whole number, which expression represents the number of
grams of substance left n days from now?
A.100(0.81)^n
B.100(1.1)^2n
C.100(0.81)^n/2
D.100(0.8)^n

answer
Answers: 3

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The amount of a radioactive substance decreases by 10% every
12 hours. Currently the amount of...

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