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Winston had a test average of Winston had a test average of 80.6 last semester. His first four test grades were 74, 77, 87, and

Winston had a test average of

Winston had a test average of 80.6 last semester. His first four test grades were 74, 77, 87, and 90. Use the formula X = X1+x2+...+Xn to find his score on the fifth test. n Answer How to enter your

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