SOLUTION: HELP???? The amount of a radioactive tracer remaining after t days is given by A = Ao e^-0.18t, where Ao is the starting amount at the beginning of the time period. How much sh

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: HELP???? The amount of a radioactive tracer remaining after t days is given by A = Ao e^-0.18t, where Ao is the starting amount at the beginning of the time period. How much sh      Log On

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Question 50260: HELP????
The amount of a radioactive tracer remaining after t days is given by A = Ao e^-0.18t, where Ao is the starting amount at the beginning of the time period. How much should be acquired now to have 40 grams remaining after 3 days.

Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
A+=+Ao%28e%5E%28-0.18%29t%29
A+=+40%28e%5E%28-0.18%293%29
A+=+40%28e%5E%28-0.54%29%29
About 26.31 grams