Question

4P Radioactive iodine is used by doctors as a tracer in diagnosing certain thyroid gland disorders. This type of iodine decays in such a way that the mass remaining after 1 days is given by the function m(t) = 5e 0.087 where is measured in grams. (a) Find the mass at time : = 0. Please round the answer to the nearest integer. m(0) = grams (b) How much of the mass remains after 20 days? Please round the answer to the nearest integer. m(20) grams HTML Editora B I VA -A- Ix E*13 X X, SE STT 12pt Του Paragraph

Answer 1

The solution is given below

The remaining mass after in by grams. t days given m(t) = 5e 0.0874 (a) For t=0 mo) = 5 el-0.087). 25e = 5 mol =5 gra iram ns b) After 20 days ic. t = 20 m(20) = 5 €60.097).20 -5-174 i 22 5 (0.1755204 m(20) = 0.8776 0 2003 m (20) = [. gram or