Math Problem Statement

Solve each inequality, graph the solution on the number line, and write the solution in interval notation. 4(3x - 1) ≤ 32 and 4(x + 2) < 0

Solution

Let's break down the image content and solve the inequality step by step.

Problem

You are given a compound inequality:

4(3x1)32and4(x+2)<04(3x - 1) \leq 32 \quad \text{and} \quad 4(x + 2) < 0

Part (a): Solve the Inequality

We need to solve both inequalities separately.

  1. First Inequality: 4(3x1)324(3x - 1) \leq 32

    • Distribute the 4: 12x43212x - 4 \leq 32
    • Add 4 to both sides: 12x3612x \leq 36
    • Divide by 12: x3x \leq 3
  2. Second Inequality: 4(x+2)<04(x + 2) < 0

    • Distribute the 4: 4x+8<04x + 8 < 0
    • Subtract 8 from both sides: 4x<84x < -8
    • Divide by 4: x<2x < -2

Now we combine the solutions. The solution set must satisfy both conditions: x3andx<2x \leq 3 \quad \text{and} \quad x < -2 The only values that satisfy both inequalities are those in the interval x<2x < -2.

Part (b): Graph the solution on the number line

The solution is x<2x < -2. This can be represented as a ray starting from 2-2 and extending to the left, with an open circle at 2-2.

Part (c): Write in interval notation

The interval for the solution x<2x < -2 is: (,2)(-\infty, -2)

Summary

  • Solution for the inequality: x<2x < -2
  • Graph: An open circle at 2-2 with a ray extending leftward.
  • Interval notation: (,2)(-\infty, -2)

Do you have any questions or would you like more details on any step?

Here are 5 related questions:

  1. How would you solve a compound inequality with "or" instead of "and"?
  2. How do you represent x>2x > -2 on a number line?
  3. What changes if one of the inequalities has a "greater than or equal to" sign?
  4. How do you solve a compound inequality involving absolute values?
  5. How would this solution differ if there were fractions in the inequalities?

Tip: When solving compound inequalities, always carefully consider whether the conditions are connected by "and" (both must be true) or "or" (either can be true).

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Math Problem Analysis

Mathematical Concepts

Inequalities
Linear Equations
Interval Notation
Graphing

Formulas

Distribution: a(b + c) = ab + ac
Solving linear inequalities

Theorems

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Suitable Grade Level

Grades 9-10