A region used for agricultural drainage has become contaminated with a mineral. Flushing the region with water will reduce the amount of the mineral for a while, but it will then begin to build up again. The model of the percent of the mineral present in the soil 1! months after the flushing begins is given by 2 M\") = t +49 ,15t512. [a] What value(s) of t should be used to test for the minimum amount of mineral? t = |:] Separate your answers with a comma. (b) When will the amount of the mineral be reduced to a minimum? After C] months [c] What is the minimum percent of the mineral? [:1" AddWork