A research lab has a 12 mg sample of a radioactive substance. The amount of the...

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A research lab has a 12 mg sample of a radioactive substance. The amount of the substance, A(t), left in the sample can be modelled by the half-life function 85 112 (1) * A(t) = 12 W 2 where t represents the time, in days, after the initial time. How much of the original sample will remain after 10 days, to the nearest tenth? A research lab has a 12 mg sample of a radioactive substance. The amount of the substance, A(t), left in the sample can be modelled by the half-life function 85 112 (1) * A(t) = 12 W 2 where t represents the time, in days, after the initial time. How much of the original sample will remain after 10 days, to the nearest tenth?