Unit 4 Test Review

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r=10

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x=1

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Which inequality represents the number of weeks it takes for Casey's dog to reach 70 lbs if it currently weighs 106 lbs and loses 4 lbs per week?

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106 - 4x ≤ 70

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Which inequality can be used to find w, the number of weeks after starting his collection when Lawrence will have more than 750 baseball cards if he starts with 200 cards and buys 25 each week?

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25w + 200 > 750

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X is greater than or equal to 4.

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What is an inequality?

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An inequality is a mathematical statement that compares two expressions and shows that one is greater than, less than, or equal to the other.

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What is the difference between an equation and an inequality?

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An equation states that two expressions are equal, while an inequality shows that one expression is greater than or less than another.

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What does the term 'solution' mean in the context of equations and inequalities?

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A solution is a value that makes the equation or inequality true.

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