marshy region used for agricultural drainage has become contaminated with a particular element. It has been determined that flushing the area with clean water will reduce e element for a while, but it will then begin to build up again. A biologist has found that the percent of the element in the soil x months after the flushing begins is given by e function below. When will the element be reduced to a minimum? What is the minimum percent? X + 100 f(x)= 2x 15x$ 12 (x + 10)(x-10) f' ( X )= 2x When will the element be reduced to a minimum? The element will be reduced to a minimum after month(s) (Type an integer or a decimal.) What is the minimum percent of the element? The minimum percent of the element will be (Round to the nearest hundredth as needed.) Next