What is rotation and mean median and mode

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2