A city manager has a map of the city on a grid, where each unit represents 1 mi. The manager determines that the equation (x+14)2+(y−5)2=9 represents the region of the city where people can hear an emergency siren located at (-14,5) on the map. What is the greatest distance a person can be from the siren and still hear it?

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Hurry and answer this! circle x with a radius of 6 units and circle y with a radius of 2 units are shown which steps would prove the circles similar? translate the circles so they share a common center point, and dilate circle y by a scale factor of 4. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 4. translate the circles so they share a common center point, and dilate circle y by a scale factor of 3. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 3

Which of the following expressions are equivalent ?

What is the area of the trapezoid shown ?