Question

The amount, A, in milligrams, of radioactive material remaining in a container can be modeled by the exponential function A(t)=5(0.5)^0.25t where T is time, in years. Based on this model how many years does it take for half of the original radioactive material to be left remaining?

Answer 1

4 years

Explanation:

The exponent of 0.5 is 1 when t=4. So, half the original amount will be remaining when t=4.