Posted by Jackson on Friday, November 30, 2012 at 8:14am.
a teacher knows that 80 percent will score no more than 5 points above or below the class average 85 percent on the test which inequality represents the test score of 80 percent of her student.

Darin  drwls, Friday, November 30, 2012 at 10:08am
Darin is not a subject I have ever heard of.
You have not provided the optional answers.
It should look something like
80 < x < 90
Where x is the test score of 85% of the students. 
Darin  caitlin, Friday, November 30, 2012 at 3:42pm
wouldn't it be 5%?