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Circle A (shown) is defined by the equation (x + 2)^2 + y^2 = 9. Circle B (not shown) is the result of shifting circle A down 6 units and increasing the radius so that the radius of circle B is 2 times the radius of circle A. Which equation defines circle B?

25 Mar

Circle A (shown) is defined by the equation (x + 2)^2 + y^2 = 9. Circle B (not shown) is the result of shifting circle A down 6 units and increasing the radius so that the radius of circle B is 2 times the radius of circle A. Which equation defines circle B?

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