Question

1. a teenager’s heart pumps an average of 7200 l of blood every 24 hours. what is the rate of change of volume of blood?

Explanation:

Step1: Identify the formula for rate of change

The rate of change (in this case, the rate at which blood is pumped) is calculated by dividing the total volume of blood pumped by the total time taken. The formula is \( \text{Rate} = \frac{\text{Total Volume}}{\text{Total Time}} \).

Step2: Substitute the given values

We know that the total volume of blood pumped is \( 7200 \, \text{L} \) and the total time is \( 24 \, \text{hours} \). Substituting these values into the formula, we get \( \text{Rate} = \frac{7200}{24} \).

Step3: Perform the division

Calculating \( \frac{7200}{24} \), we find that \( 7200 \div 24 = 300 \).

Answer:

The rate of change of the volume of blood is \( 300 \, \text{L per hour} \).