SOLUTION: Susan scored 80, 84, and 92 on her first three algebra test. What must she score on her test in order to have an average of 85?

SOLUTION: Susan scored 80, 84, and 92 on her first three algebra test. What must she score on her test in order to have an average of 85?

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Question 1158984: Susan scored 80, 84, and 92 on her first three algebra test. What must she score on her test in order to have an average of 85?
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
This next test makes four of them.

Solve for x.
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