A student has grades on 3 examinations of 76,80,and 72. What must a student earn on a 4TH examination to have an average of 80
1 answer:
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Krystal is correct
<h2>Explanation:</h2>
We have the following equation:
In order to solve this, we need to follow this step:
Step 1. <em>Add </em>11 to both sides:
So, Krystal is correct
<h2>Learn more:</h2>
Solution to equations: brainly.com/question/6251329
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