2(5y-3) pleas I need 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

Suppose that triangle a shown on the grid is translated 3 units to the right and 2 units up to create a triangle a', what is the slope of the hypotenuse of triangle a'?

Evaluatethe expression 7.5-3.2+4(raised to the third power) / 2