Mathematics, 13.01.2021 21:10, robert7248

A substance decays so that the amount A of the substance left at time t is given by: A = A 0 ∙ (0.8) t

where A 0 is the original amount of the substance. What is the half-life (the amount of time that it takes to decay to half the original amount) of this substance rounded to the nearest tenth of a year?

A. 0.6
B. 1.6
C. 2.5
D. 3.1

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