adrianna went on a 90 mile trip to a soccer game. on the way back, due to road construction she had to drive 15 miles an hour slower. this made the trip take 1 hour longer. how fast did she drivr to the soccer game?

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.