Question

1.
Will some please check my work?
RE: Dr. Brown has a radioisotope source containing 1.2 x 106 (also written as 1.2E+06) atoms of Plutonium-238 in 1985, how many atoms will remain in 352 years?
Answer Details
The equation to model exponential decay is
P(t)=P0ekt, where P(t) is the amount left after t years, P0 is the original amount, and k is the rate of decay. The half life of Plutonium-238 is 87.7 years. Solving for the rate of decay, k yields
1/2=e87.7k
ln(1/2)=87.7k
k=ln(1/2)/87.7=-.007895
Now,...
The equation to model exponential decay is
P(t)=P0ekt, where P(t) is the am