A blueprint includes a driveway that is 2 in. wide and 6 in. long. If the actual driveway is 12 ft wide, how long is the driveway?

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.

Looks pretty good to me!