Charlie runs labs around a track the table shows how long it takes him to a different numbers of laps how long will it take Charlie to run seven laps pls help :(

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

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

Me. i can't figure out this question. give an explanation too. .