Your Aunt Juanita bring a cheese pizza for children. You eat 1/5 of the pizza and Maria eats 1/3 how much is left? how much did you eat together? please help my sister is gonna kill me

Which is an equation for the nth terms of the sequence 12,15,18,21

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

Solve the system of equations. y= 2x y= x^2 - 15