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Thinking (11 marks) 9. The graph below represents the heart rate, in beats per minute (bpm) of a runner t minutes after finishing a race. Heart Rate Recovery 200 -190 -170 Heart Rate (bpm) Time (minutes) 19 c) The graph above (question 9) can be modeled with the equation R(t) = 120(0.75) + 60. Use the equation to verify the results from above: i) average ROC of heart rate from t = 0 to t = 10 minutes. ii) instantaneous rate of change of heart rate at t = 7 minutes NI