college algebra

[runaboutgrandpa]

On your first four tests, you scored 80%, 76%, 99%, 91%. Whatdo you have to get on the final test toaverage at least an 80% for the course.

 

[Deleted member 4993]

On your first four tests, you scored 80%, 76%, 99%, 91%. Whatdo you have to get on the final test toaverage at least an 80% for the course.

How do you calculate average of 5 tests?

Please show us your work, indicating exactly where you are stuck - so that we may know where to begin to help you.