Answer: +24
Step-by-step explanation: To multiply (-8)(-3), remember that a negative times a negative is always a positive. So (-8)(-3) is +24.
This the concept of geometry, we are required to get the coordinates of the point p which is the center of the circle.
The center of the circle will be at the point:
(x,y)
=[(6-1)/2,(6-3)/2]
=(5/2,3/2)