Which of the following transformations has the same result as a rotation of ninety degrees clockwise?

A. dilation of scale factor of 9

B. reflection about a horizontal line

C. rotation of two hundred seventy degrees counterclockwise

D. translation down and to the right

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.