The function f(x) - 200(0.5)x/50 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. 156 pounds 29 pounds 36 pounds 280 pounds

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter7: Exponents And Exponential Functions
Section7.5: Exponential Functions
Problem 48PFA
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The function f(x) - 200(0.5)x/50 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.
156 pounds
29 pounds
36 pounds
280 pounds
Transcribed Image Text:The function f(x) - 200(0.5)x/50 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. 156 pounds 29 pounds 36 pounds 280 pounds
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