Units 1-4 Review

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-23

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Mrs. Lewis bought $125 worth of groceries. After using coupons, she got a discount of 10%. What was the amount of discount?

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$12.50

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Dylan's mother ordered 100 slices of pizza for his party. 75 slices were actually eaten. What was his mother's percent error?

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33% error

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Simplify the following expression: (b^3)^8

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b^24

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0.625

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What is the formula to calculate the discount amount?

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Discount Amount = Original Price × Discount Rate

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What is the formula to calculate percent error?

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Percent Error = (|Estimated Value - Actual Value| / Actual Value) × 100%

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2

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64

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