I need the step to show how I got there

U 96 option fn control option command command Thinking (11 marks) The graph below represents the heart rate, in beats per minute (bpm) of a runner t minutes after finishing a race. Heart Rate Recovery Heart Rate (bpm) Time (minutes) a) Use a secant line to calculate the average rate of change of heart rate from t = 0 to t = 10 minutes. NI b) Use a tangent line to calculate the instantaneous rate of change of heart rate at t = 7 minutes. NI 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. NI ii) instantaneous rate of change of heart rate at t = 7 minutes