The response variable in the study that Ann has done here can be said to be Time spent exercising.
<h3>What is a response variable?</h3>
This is the name that is used to refer to the dependent variable. This is the variable that is of interest in the study. The goal is to see the changes that occurs in the particular variable based on the actions that another variable would have such as the independent variable.
From this we can see that The response variable in the study that Ann has done here can be said to be Time spent exercising.
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Triangles MNP & MAB are similar (NP//AB & Angle A= Angle N (correspondent) Same for P & B
We know that MA = 67.2 -3.2 = 35.2
Since Triangles MNP & MAB are similar , then we can write the following ratio:
MN/MA=MP/MB or 67.2/35.2 =81.9/x
& x= 43 m
Radius of ball is 6 inches. Then the volume is 904.32 
<u>Solution:</u>
Given that, radius of a ball is 6 inches.
We have to find the volume of the ball with 6 inches radius.
Now, we know that, a ball will be in a shape of sphere, so we have to use the volume of a sphere formula to find the volume of the ball.
<em><u>The volume of sphere is given as:</u></em>

where r is the radius.
Here in our problem, r = 6


Hence the volume is 904.32 