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Someone pls help it would eb life svaing

Someone pls help it would eb life svaing-example-1
User Matt Brody
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1 Answer

3 votes

Answer:

90%

Explanation:

Because we're looking for the minimum score which Michaela could earn to for the mean of her quiz grades to be an 85% or above, we can use an inequality and allow x to represent the final score needed:

85 ≤ (72 + 77 + 84 + 86 + 92 + 94 + x) / 7

595 ≤ 505 + x

90 ≤ x

Thus, 90% is the minimum score Michaela must earn on the last quiz for the mean quiz grade to be at least 85% or higher.

User Cavin Macwan
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