If the triangle on the grid below is translated by using the rule (x, y)> (x-2, y+2), what will be the coordinates of a’ ?

Quick translate "x is 12 units from 20" into an equation. what are the values of x being described? if you can answer any of my other questions that'd be great too

The radical equation 2+√2x-3 = √x+7 has a solution set [x= a0} and an extraneous root x = a1.

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?