PLZ HELP! WILL GIVE BRAINLIEST!

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

Will give brainliest what is the value of x? enter your answer in the box.

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?