Question 3.8.1   Jim uses a sensor to measure his hear…

Questiоn 3.8.1   Jim uses а sensоr tо meаsure his heаrt rate before he starts running. He starts running and measures his heart rate every five minutes. After his run, he draws a graph.       Use the graph to help you answer the question.   Click on the button below to open the picture of the graph.     What is Jim's heart rate before he starts running? [ans1] beats per minute. (1)