A survey asked a group of people the size of their households. The results are shown in the frequency distribution.
2 answers:
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This circle is given in standard form 
, where 
is the ordered pair for the center of the circle.
Notice that in the equation, we have
and 
. When writing the ordered pair alone, we have to remember to flip the sign.
Therefore, we have
.
Notice that in the equation, we have
Therefore, we have
that's it's formulae for the appropriate root
