Given the equation (x+3)2+y2=81, choose ALL correct answers. (1. The center of the circle would lie on the x-axis.) (2. The center of the circle would lie on the y-axis.) (3. The center of the circle would lie in a quadrant.) (4. The radius is 9.) (5. The radius is 40.5) (6. The radius is 81) ( 7. The diameter is 18.) (8. The diameter is 81.) ( 9. The diameter is 162.)