SOLUTION: A student scored 84 and 87 on her first two quizzes. Write and solve a compound inequality to find the possible values for a third quiz score that would give her an average between

Algebra ->  Inequalities -> SOLUTION: A student scored 84 and 87 on her first two quizzes. Write and solve a compound inequality to find the possible values for a third quiz score that would give her an average between      Log On


   

Question 1014026: A student scored 84 and 87 on her first two quizzes. Write and solve a compound inequality to find the possible values for a third quiz score that would give her an average between 85 and 90, inclusive.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
The total divided by 3 has to be between 255 and 270.
255<=171+x<=270
or 84<=x<=99