1. To analyze two schools in the district, the school board randomly surveys 10 students from each school to find how many hours were spent doing
homework last night. The data is recorded in the table below.

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.