Raquel takes her pulse in order to determine her resting heart rate, measured in beats per minute (\text{bpm})(bpm)left parenthe
sis, start text, b, p, m, end text, right parenthesis. She takes it for three minutes, and makes the following table of the results. We'll assume that Raquel's heart rate is constant over the three-minute period. The graph below shows an ideal resting heart rate for someone Raquel's height, weight, age, and general level of fitness. The x-coordinate represents minutes, and the y-coordinate represents beats.
