A construction crew is placing a square in a wall for a new window. The window is 318 feet wide.

The wall has a length of 1138 feet.

The crew wants to position the window at the center of the wall.

How far from each edge of the wall should the window be positioned?

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.