In the Formula A(t) = A0ekt, a Is the Amount

Multiple Choice

In the formula A(t) = A0ekt, A is the amount of radioactive material remaining from an initial amount A0 at a given time t, and k is a negative constant determined by the nature of the material. A certain radioactive isotope
Decays at a rate of 0.3% annually. Determine the half-life of this isotope, to the nearest year.

A) 167 yr
B) 231 yr
C) 2 yr
D) 100 yr