Solve the problem.The function A = Aoe-0.0099x 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 500 pounds of the material are initially put into the vault, how many pounds will be left after 80 years?
A. 273 pounds
B. 286 pounds
C. 226 pounds
D. 219 pounds
Answer: C
Mathematics
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