SOLUTION: Hi, my questoin is veronica has earnedan 87, an 83, and an 89 on the three tests that she has already taken this quarter. write and solve an inequality representing the grade s

Algebra ->  Inequalities -> SOLUTION: Hi, my questoin is veronica has earnedan 87, an 83, and an 89 on the three tests that she has already taken this quarter. write and solve an inequality representing the grade s      Log On


   

Question 713282: Hi,
my questoin is
veronica has earnedan 87, an 83, and an 89 on the three tests that she has already taken this quarter. write and solve an inequality representing the grade she needs to get on the fourth test in order to have an A for tests for the quarter
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
The description or the question is incomplete. Give information about how the A grade is identified. So far we can only understand that an A is a score greater than .... what? You need to know or give the boundary for grade of A.

The boundary score so far is a variable, let's say A. A is an known but not given value. Any score at or above A is a grade of A.

The next test score earned is X. Now, is the grading evaluation based on total score points, or is it based on test averages? We need to know this.

Total test score sum = 87%2B83%2B89%2BX.

If grades rely on sum of test scores, then A grade is some quantity of summed test scores, so for 87%2B83%2B89%2BX%3E=A%7D%2C+the+value+for+X+must+be+%7B%7B%7BX%3E=A-%2887%2B83%2B89%29.

If grades rely on test averages, then the relation is %2887%2B83%2B89%2BX%29%2F4%3E=A for which A is an established value for averages. X%3E=4A-%2887%2B83%2B89%29 would be the condition needed for earning a score X to make an A grade.