SOLUTION: The function A = Aoe-0.00866x models the amount in pounds of a particular radioactive material stored in a concrete vault, where x is the number of years since the material was put

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Question 1039874: The function A = Aoe-0.00866x models the amount in pounds of a particular radioactive material stored in a concrete vault, where x is the number of years since the material was put into the vault. If 600 pounds of the material are initially put into the vault, how many pounds will be left after 120 years?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+A+=+A%5B0%5D%2Ae%5E%28+-.00866x+%29+
+A%5B0%5D+=+600+ pounds
+x+=+120+ years
--------------------------
+A+=+600%2Ae%5E%28+-.00866%2A120+%29+
+A+=+600%2Ae%5E%28+-1.0392+%29+
+A+=+600%2A.35374+
+A+=+212.2425+
After 120 years, there will be 212.2425 pounds left
( calculations on my old TI-35 calculator )