A rectangle has vertices (6, 4), (2, 4), (6, -2), and (2, -2). The rectangle is dilated, and the new vertices are (15, 10), (5, 10), (15, -5), and (5,-5). Which of the following represents the motion rule used to dilate the rectangle? O (x, y) (x +9, y+6) O (x, y) + (x + 2.5, y +2.5) O (x, y) O (x, y) → (2.5x, 2.5y)​

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.