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

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 -

Now given scores addition is =

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 :

So, the range lies between [68,100]

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