3. The function f(x) is shown graphed below only for positive x's. y (a) If f(x) is an even function, graph the other portion of ƒ (x) for the negative x's. (b) Based on the entire graph of f (x), over what interval(s) isf (x) > 0? (5,5) (c) What is the average rate of change of f(x) for [-7, 5]?

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