# The half-life of a certain radioactive material is 85 days. An initial amount of the material has a mass of 801 kg. How do you write an exponential function that models the decay of this material and how much radioactive material remains after 10 days?

##### 1 Answer

Jul 18, 2016

Let

Now when t =85days then

Putting the value of

Now the amount of radioactive material remains after 10 days will be