Mrs miles gave the same test to both her first and third period class. In the first period, the median was 75 and the range was 30. In the third period, the median was 85and the range was 50.which statement is true

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.

The answer is b. (-13).