The graph to the right shows the heart rate of a person watching a short romantic film, where x represents toe in minutes and y represents heart rate in boats per minute Answer the following questions. How many turning points (from increasing to decreasing or from decreasing to increasing) occured for the person's heart rate during the 15 minute film? Suppose that a polynomial function is used to model the data displayed the graph what is the degree of the polynomial function of best fit? (Use the number of turning points to determine)