Problem: An environmental group estimates that the amount of pollution in a pond will decrease by 10% each month. To determine the concentration C, of pollutants (in parts per million) after (m) months, the group uses the function C(m) = 23(0.95)m.

(1) to the nearest tenth, what will be the concentration of pollutants in the pond in 5 years?

(2) What was the initial concentration of pollutants in the pond?

I'm struggling with this one. I can't grasp the process and need a detailed reply not only of the correct answer but how to get the answer. I have several other problems similar to this one, so if I can understand this one I can do the rest. Thanks!

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