Answer:
a negative and a positive
Step-by-step explanation:
always equal a negative
and she put x next to 31.7 when x was not meant to be there
Any circle that can given by

have a center of

You can choose
any positive value for the radius

Hence, there are infinity circles.
Answer:
6
Step-by-step explanation:
The mode is the number which appears most often in a set of numbers in this case that would be 6 because it appears twice