The standard form of a circle is

, where h and k are the coordinates of the center and r is the radius. We will fill in accordingly with what we have.

. Simplifying a bit we have

. That's the equation for your circle.
Answer:

m = slope
b = y-intercept
Step-by-step explanation:
The answer is 12 pies. If you sell 60 pieces and there are 5 pieces in each pie then you would Have 12 pies. X = pies 5x =60 To undo this you would have to divide 60 by 5.