Answer:
it is either 2 or 4
Step-by-step explanation: because if you break them apart you will get 2 or 4
Since the formula for the area of a circle is Pi x r squared, the area would be 81 x Pi (you teacher may want you to use Pi as 3.14 or put it in your calculator).
No this data set is not a function because two points have x coordinates of 4
Hope this helps
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X-12 -8
calculate the difference
X-20
