Question

You are studying for your final exam of the semester. up to this point,you recieved 3 exam scores of 83%,85%, and 84%. to recieve a grade of B in the class you must average exam score between 80% and 89% for all 4 exams including the final.
Find the widest range of scores that you can get on the final exam in order to recieve a grade of B for the class.Use interval notation ...?

Answer 1

[68,100]

This will allow you to get a B score.

To solve find the medium by adding the values divided by 4, solve for the unknown of the final exam, with the minimum value equalling 80, this will give you 68.

Answer 2

Answer:

The widest range lies between [68,100]

Step-by-step explanation:

Given is - to receive a grade of B in the class you must average exam score between 80% and 89% for all 4 exams including the final.

So, the range of the addition of all 4 scores is -

$80*4=320$

$89*4=356$

Now given scores addition is = $83+85+84=252$

Now, the widest range of scores that you can get on the final exam in order to receive a grade of B can be found as :

$320-252= 68$

$356-252= 104$

So, the range lies between [68,100]