For many​ people, breakfast cereal is an important source of fiber in their diets. Cereals also contain​ potassium, a mineral shown to be associated with maintaining a healthy blood pressure. An analysis of the amount of fiber​ (in grams) and the potassium content​ (in milligrams) in servings of 77 breakfast cereals produced the regression model Potassium=39+28Fiber. If your cereal provides 9 grams of fiber per​ serving, how much potassium does the model estimate you will​ get?

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