Quadrilateral ABCD is graphed on the coordinate plane below. Reflect quadrilateral ABCD across the x-axis.

J= r + 9 because since jessica rode 9 more miles than roger, you add 9 miles to rogers mileage.

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.