I will go with B.
How the data spread out is measured by standard deviation. IQR is <span>measure of variability.</span>
B is the answer I chose but there are the steps so you can see how to solve it
3.43 dollars divided by 7 minutes = 0.49 cents
The equation is y = 63/x
And y = 3 when x=21
Step-by-step explanation:
When y varies inversely with x, The inverse proportion is given by:
y ∝1/x
When the proportionality symbol is removed, a constant of proportionality is introduced

Putting y = 7 and x = 9

So,

Putting x =21

Hence,
The equation is y = 63/x
And y = 3 when x=21
Keywords: Proportion, variables
Learn more about proportion at:
#LearnwithBrainly
Answer:
a. 25/49. the answer is as simplified as possible