SOLUTION: Help plz!! After a pollutant is dumped into a lake, each year the amount of pollutant is reduced by 18%. Considering the function A(t)=Ao(0.82)^t, the lake will be safe to swim

Question 811253: Help plz!!
After a pollutant is dumped into a lake, each year the amount of pollutant is reduced by 18%. Considering the function A(t)=Ao(0.82)^t, the lake will be safe to swim in when the pollutant is reduced to 0.1Ao. After how many years will the lake be safe?

Answer by josgarithmetic(39632) (Show Source): You can put this solution on YOUR website!
Find t when
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years
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