Randy is 20 years old. He has a resting heart rate of 70 beats per minute (bpm). What is his target heart rate range? A 148-174 bpm B 78-104 bpm C 90-120 bpm D 1 68-198 bpm

Your friend plays soccer for several teams. He has practice or a game every day. Lately, he cannot finish his homework without falling asleep. What advice would you give him?

How is your resting heart rate an indication of your level of fitness?

You are trying out for the basketball team in a few months. Your friend is trying out for the volleyball team. He asked you to train with him. What types of activities would be beneficial to both of you? What types of activities would be more beneficial to you?

Your uncle has always said that he does not need to exercise because he eats well and is not overweight. In a letter, explain to your uncle why this is not true.

Tracy's normal resting heart rate is about 75 beats per minute (bpm). During a strenuous workout, her heart rate increases 65 beats per minute, up to 140 bpm. When she begins her cool down, her elevated heart rate decreases by about 40% each minute. So Tracy's heart rate, in beats per minute, after x minutes of cooling down, is given by $f(x)=65(0.6)^{x}+75$ What is the graph of $f(x)=65(0.6)^{x}+75 ?$