Question 526402
x/5 = 86
.
x = 430 = total points earned on the five quizzes
.
t = score on the next test
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(430+t) / 6 = 88
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multiply through by 6
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430+t = 528
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t = 528-430
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t = 98
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Answer:  He needs to score at least 98 on the sixth quiz to raise his average to at least 88.