Joy made a scale drawing of a house and its lot. The backyard deck, which is 42 feet wide in real life, is 56 inches wide in the drawing. What scale did Joy use for the drawing? (please share the steps on how you got the answer)

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

Factor this polynomial completely x^2-64

Anyone know? is appreciated! will mark brainliest if correct!