SOLUTION: Jeannie's scores on her first four tests were 80, 65, 87,and 75. What will she have to score on her next test to obtain an average of at least 80 for the term?

Question 210413: Jeannie's scores on her first four tests were 80, 65, 87,and 75. What will she have to score on her next test to obtain an average of at least 80 for the term?
Answer by tutor_paul(519) (Show Source): You can put this solution on YOUR website!
you can write an equation for this where 'x' is the score you are asked to determine. Note that to find an average, you add up all the scores and divide by the number of scores.

Simplifying:

Solve for x:

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Good Luck,
tutor_paul@yahoo.com
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