21/4 pounds of chocolate cost $9.00. what is the price per pound?

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

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

If f(x)= 3x+6 which of the following is the inverse of f(x)