You are asked to study the lake and specifically look at the history of N42 that

Question

You are asked to study the lake and specifically look at the history of N42 that was dumped into the lake through the year 2000. Environmental engineers tested the water and found 18 ppm when the dumping was discovered and put to a stop. With contaminant-free water flowing in and considering the lake%u2019s outflow, engineers estimate the contamination will fall by 15% each year. This is therefore an exponential decay problem (think about what you learned in college algebra about modeling exponential growth and decay).

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All this for 720 pts?? move the question dude...

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