Sam wants to earn at least a B in math. If Sam earned the following percents 100, 82, 70, 72, 80. What is the minimum grade Sam must earn in order to keep a B average in math? (Hint: A grade of B is an 80 and greater and less than a 90.)
I need to write an algebraic equation for this. I don't want the answer, I want to know how to make the equation.

Question

Sam wants to earn at least a B in math.  If Sam earned the following percents 100, 82, 70, 72, 80.  What is the minimum grade Sam must earn in order to keep a B average in math?  (Hint:  A grade of B is an 80 and greater and less than a 90.)
I need to write an algebraic equation for this. I don't want the answer, I want to know how to make the equation.

mertsj · Answer

Write the sum of all the tests so far and x.  divide by 6, the total number of test. That average of all six tests must equal 80

mertsj · Answer

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