The figure shows the cost of mailing a first class letter f x as a function of its weight x in ounces for weights not exceeding 3 5 ounces Find f 2 5 What does this mean in terms of the variables in this situation Cost dollars 0 92 0 75 0 58 0 41 2 Weight ounces 1 f 2 5 What does this mean in terms of the variables in this situation It costs to mail a ounce first class letter 3