Solve the problem. The function A = Aoeoooasx 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 placed in the vault. how much time will need to pass for only 204 pounds to remain? Edit View Insert Format Tools Table , ,,,,1,?nty spamnmnb7'1 l R _J, ,JJ A. v J'? _v__ .122 y l, e L , a _ _ e ,7