Math Problem Statement

Solve

Solve the inequality. Graph the solution set. -4|2x - 3| ≥ -20

Solution

The inequality in the image is:

42x320-4|2x - 3| \geq -20

Step-by-step solution:

  1. Divide both sides by -4 (remember that dividing an inequality by a negative number flips the inequality sign):

2x35|2x - 3| \leq 5

  1. Solve the absolute value inequality:

This inequality 2x35|2x - 3| \leq 5 can be rewritten as:

52x35-5 \leq 2x - 3 \leq 5

  1. Solve for xx by adding 3 to all parts:

5+32x5+3-5 + 3 \leq 2x \leq 5 + 3

22x8-2 \leq 2x \leq 8

  1. Divide by 2:

1x4-1 \leq x \leq 4

Final solution:

The solution set is [1,4][-1, 4].

The correct answer would be option B, and the solution in interval notation is:

[1,4][-1, 4]

Would you like further details or have any questions?

Here are five related questions to deepen your understanding:

  1. How do you solve absolute value inequalities with a "greater than" symbol?
  2. What changes in the solution if the inequality sign had been strict (i.e., << instead of \leq)?
  3. How do you graph the solution set on a number line?
  4. How does dividing or multiplying by a negative number affect inequality signs?
  5. Can absolute value inequalities have no solutions? If so, under what conditions?

Tip: When solving inequalities, always remember to flip the inequality sign when multiplying or dividing by a negative number!

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Math Problem Analysis

Mathematical Concepts

Algebra
Absolute Value Inequalities
Inequalities

Formulas

Absolute value inequality formula: |ax + b| ≥ c
Solving inequalities involving absolute values

Theorems

When dividing an inequality by a negative number, the inequality sign reverses

Suitable Grade Level

Grades 9-12