Which of the following is not considered format?
boldface type
graphics and shading
headers and boxes
ordering of information

The correct answer should be graphics and shading. That's because they are parts of the visual part of a paper and are not even necessary. The other aspects mentioned here fall within the domain of format because they deal with how papers, or anything for that matter on a pc, is formatted.

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.