Katie wants to buy a rug for a room that is 23 feet wide and 30 feet long. She wants to leave a uniform strip a floor around the rug. She can afford to buy 260 ft.² of carpeting. What dimensions should the rug have?

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.