the function A=A0e^(-.0138x) 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 in the vault.
If 400 pounds of the material are initially put into the vault, how many pounds will be left after
120 years?
Solution
A0 = 400
x = 120
A = 400 e^(-0.0138*120) = 76.36 pounds will be left
stored in a concrete vault, where x is the number of years since the material was put in the vault.
If 400 pounds of the material are initially put into the vault, how many pounds will be left after
120 years?
Solution
A0 = 400
x = 120
A = 400 e^(-0.0138*120) = 76.36 pounds will be left
