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Reuben has scores of 70,75,83, and 80 on four spanish quizzes. what score must he get on the next quiz to achieve an average of at least 80?

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naǫ

x - the score he must get

\(\frac{70+75+83+80+x}{5} \geq 80 \\ \frac{308+x}{5} \geq 80 \\ 308+x \geq 400 \\ x \geq 92\)

He must get at least 92 points.

ok well If he gets a 92 percent he will have a 80!! :)

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