A radioactive substance decays in such a way that the mass (in kilograms) remaining after t days is given by the function A(t)=5 e^-0.0347 t a) Find the mass (i.e. initial mass) at time t=0 b) What percentage of the initial mass remains after 10 days? c) On your GDC and then on paper, draw a graph of the function A(t) for 0 ⩽t ⩽50 d) Use one of your graphs to approximate, to the nearest whole day, the half-life of the radioactive substance. | Numerade
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