radio active substance decay word problem exponential functions

Question

Alexander Litvinenko was poisoned with 10 micrograms of the radioactive substance Polonium-210. Since radioactive decay follows a compounded continuously model, we can determine the amount of substance left in Alexander Litvinenko's body at any given time. If Polonium-210 has a daily decay rate of .502%, then determine the amount of Polonium-210 left in his body after 55 days. Provide 3 decimal places and a label in your answer.

Answer 1

A = 10(0.99498)⁵⁵         decay of 0.502% indicates 99.498% remains