What is the probability of picking a 3 out of the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10

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

Need on this one asap im almost done with this subject

The vet charges $45 for an office visit and $10 for each vaccination your dog needs. write an eaquation