If a normal heart rate is \( 80-100 \) beats per minute, is the man's heart rate normal? How many heart beats would he have after 8 minutes if his heart rate improved to 50 beats per minute?

To address your questions: 1. **Is the man's heart rate normal?** - **Given Normal Range:** You mentioned that a normal heart rate is between **80-100 beats per minute (bpm)**. - **Man's Heart Rate:** If the man's heart rate is **50 bpm**, this is **below** the normal range provided. - **Conclusion:** **No**, a heart rate of 50 bpm is **below** the normal range of 80-100 bpm. This condition is known as **bradycardia**, which means a slower than normal heart rate. It's important to consult a healthcare professional to determine if this heart rate is healthy for his specific situation. 2. **How many heartbeats would he have after 8 minutes if his heart rate improved to 50 bpm?** - **Calculation:** \[ \text{Heartbeats per minute} \times \text{Number of minutes} = \text{Total Heartbeats} \] \[ 50 \, \text{bpm} \times 8 \, \text{minutes} = 400 \, \text{heartbeats} \] - **Answer:** After 8 minutes at a heart rate of **50 bpm**, he would have **400 heartbeats**. **Summary:** - A heart rate of 50 bpm is **below** the normal range of 80-100 bpm. - At 50 bpm, the man would experience **400 heartbeats** over the span of 8 minutes.