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Mathematics, 14.05.2021 19:10 kiekie1986

The amount of pollutant, measured in parts per million, in Pine Lake, can be modeled by the function A(t) = 28e^ −0.16t, where t is the number of years since a program to clean up the lake began. Approximately how long will it take for the amount of the pollutant in Pine Lake to reach 7 parts per million?

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