problem. 28x-*=20-8 The function f(x) = 500(0.5)x/100 models

Last updated: 7/15/2022

problem. 28x-*=20-8 The function f(x) = 500(0.5)x/100 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. Find the amount of radioactive material in the vault after 140 years. Round to the nearest whole number.