Question: Need help solving The function f(x) = 800(0.5)models the amount in pounds of a particular radioactive material stored in a concrete vault, where x is

Need help solving

The function f(x) = 800(0.5)"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 200 years. Round to the nearest whole number. O A. 140 pounds O B. 110 pounds O C. 1,143 pounds O D. 628 pounds

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