Question

question 12: if volunteer e had a post - exercise breathing rate of 28 instead of 24, how would that affect the average post - exercise breathing rate? (1 point)
it would increase slightly
it would decrease slightly
it would stay the same
it would double
question 13: how do the circulatory and respiratory systems work together during exercise? (1 point)
they both slow down to save energy
the respiratory system brings in oxygen, and the circulatory system delivers it to muscles
the circulatory system stores oxygen until its needed
the respiratory system pumps blood through the body

Explanation:

Question 12

Step1: Recall average formula

Average = $\frac{\text{Sum of values}}{\text{Number of values}}$. If one value increases while others stay the same, the sum of values increases.

Step2: Analyze impact on average

With the number of values constant, an increased sum leads to a higher average. Since 28 > 24, the average post - exercise breathing rate will increase slightly.

During exercise, the respiratory system inhales oxygen from the air. The circulatory system, with the heart as the pump, transports this oxygen - rich blood to the muscles that need it for energy production.

Answer:

It would increase slightly

Question 13