Earthquakes release seismic waves that occur in concentric circles from the epicenter of the earthquake. Suppose a seismograph station determines the epicenter of an earthquake is located 9 kilometers from the station. If the epicenter is located at the origin, write the equation for the circular wave that passes through the station.
A. x2 + y2 = 81
B. x2 + y2 = 9
C. (x - 9)2 + (y - 9)2 = 0
D. (x + 9)2 + (y + 9)2 = 0

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Which of these equations is the equation of circle of radius 9 centered at the origin?

James <3 can you help me after by any chance?

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