SOLUTION: The amt of a pollutant, measured in parts per million, in pine lake can be by A(t)=14e-0.16t where t is the number of years since a program clean up. How long will it take for the

Question 319888: The amt of a pollutant, measured in parts per million, in pine lake can be by A(t)=14e-0.16t where t is the number of years since a program clean up. How long will it take for the pollutant in pine lake to reach 7 parts per million.
ANSWER: 12.52 YRS OR 4.33 YRS
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!

The amount of pollutant in ppm at the
end of the program is

Take the ln of both sides

yrs

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