Solve each inequality. Give the solution set in interval notation. | 7 - 3x | ≤ 4
Table of contents
- 0. Review of Algebra4h 18m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations1h 43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 5m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 22m
- 10. Combinatorics & Probability1h 45m
1. Equations & Inequalities
Linear Inequalities
Problem 41
Textbook Question
Solve each inequality. Give the solution set in interval notation. | 0.01x + 1 | < 0.01
Verified step by step guidance1
Recognize that the inequality involves an absolute value expression: \(|0.01x + 1| < 0.01\). Recall that for any expression \(|A| < B\) (where \(B > 0\)), this means \(-B < A < B\).
Apply this property to the given inequality: \(-0.01 < 0.01x + 1 < 0.01\).
Next, solve the compound inequality by isolating \(x\). Start by subtracting 1 from all parts: \(-0.01 - 1 < 0.01x < 0.01 - 1\).
Simplify the inequalities: \(-1.01 < 0.01x < -0.99\).
Finally, divide all parts by \$0.01\( to solve for \)x\(. Since \)0.01\( is positive, the inequality signs remain the same: \)\frac{-1.01}{0.01} < x < \frac{-0.99}{0.01}$. Express the solution set in interval notation based on these bounds.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Absolute Value Inequalities
Absolute value inequalities involve expressions where the absolute value of a variable or expression is compared to a number. To solve |A| < B, where B > 0, rewrite it as a double inequality: -B < A < B. This approach helps isolate the variable within a range.
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Solving Linear Inequalities
Solving linear inequalities requires isolating the variable on one side by performing algebraic operations such as addition, subtraction, multiplication, or division. When multiplying or dividing by a negative number, the inequality sign must be reversed to maintain a true statement.
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Interval Notation
Interval notation is a concise way to represent solution sets of inequalities. It uses parentheses for values not included (open intervals) and brackets for values included (closed intervals). For example, (a, b) means all numbers between a and b, excluding endpoints.
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