1.  Write an equation of the circle with center at (-2,3) and radius 4

2. Write an equation of the circle with center at (2,-1) and radius 7

3. Give the radius and center of the circle with equation (x+1)2 + y2=5

4. Give the radius and center of the circle with equation x2+(y-5)2=5

5. Find an equation of the circle with center at (0,3) that contains the point (0,6)

6. Find an equation of the circle with center at (3,-1) that contains the origin.