Math Problem Statement
Solve -9 < 4x + 3 ≤ 11.
Solution
Let's solve the compound inequality step by step.
Step 1: Solve the first part of the inequality .
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Subtract 3 from both sides:
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Divide both sides by 4: This can be rewritten as .
Step 2: Solve the second part of the inequality .
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Subtract 3 from both sides:
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Divide both sides by 4:
Step 3: Combine the results.
From the first part, we have , and from the second part, we have .
The combined solution is , or equivalently and .
Conclusion:
The correct answer is Option A: and .
Would you like further details or have any questions? Here are some related questions you might find useful:
- How do you solve inequalities with more than two parts?
- What are the key differences between "and" and "or" in compound inequalities?
- How do you represent solutions to inequalities on a number line?
- How does solving inequalities differ from solving equations?
- What are some common mistakes to avoid when solving compound inequalities?
Tip: When solving compound inequalities, always pay attention to the direction of the inequality signs when multiplying or dividing by negative numbers.
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Math Problem Analysis
Mathematical Concepts
Algebra
Inequalities
Formulas
Linear inequality formula ax + b < c
Theorems
Properties of inequalities
Suitable Grade Level
Grades 8-10