Factor 2x^2+7x-49 ( sorry that its 10 points i dont have many : / )

Me find the missing dimension of a triangle height: 7 in., area: 21^2

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

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1