Math Problem Statement

Solve for c and graph the solution. 707≤4|7c–875|+7

Solution

To solve the inequality 70747c875+7707 \leq 4|7c - 875| + 7, let's break it down step by step.

Step 1: Isolate the absolute value expression

Start by subtracting 7 from both sides to isolate the absolute value expression:

707747c875707 - 7 \leq 4|7c - 875| 70047c875700 \leq 4|7c - 875|

Now, divide both sides by 4 to further isolate the absolute value term:

70047c875\frac{700}{4} \leq |7c - 875| 1757c875175 \leq |7c - 875|

Step 2: Solve the inequality for cc

The inequality 1757c875175 \leq |7c - 875| means that the expression inside the absolute value, 7c8757c - 875, can be either greater than or equal to 175 or less than or equal to -175. Therefore, we need to solve two separate inequalities:

  1. 7c8751757c - 875 \geq 175
  2. 7c8751757c - 875 \leq -175

Solve inequality 1: 7c8751757c - 875 \geq 175

Add 875 to both sides:

7c175+8757c \geq 175 + 875 7c10507c \geq 1050

Now divide both sides by 7:

c10507c \geq \frac{1050}{7} c150c \geq 150

Solve inequality 2: 7c8751757c - 875 \leq -175

Add 875 to both sides:

7c175+8757c \leq -175 + 875 7c7007c \leq 700

Now divide both sides by 7:

c7007c \leq \frac{700}{7} c100c \leq 100

Step 3: Combine the results

We have two inequalities:

c150orc100c \geq 150 \quad \text{or} \quad c \leq 100

Thus, the solution to the inequality is:

c100orc150c \leq 100 \quad \text{or} \quad c \geq 150

Graphing the solution:

The solution c100c \leq 100 or c150c \geq 150 can be represented on a number line as two intervals:

  • One interval is from negative infinity up to 100 (inclusive).
  • The other interval is from 150 to positive infinity (inclusive).

I will now graph the solution on a number line.

Let me know if you'd like a more detailed explanation of any step! And feel free to ask if you have any further questions.

Follow-up questions:

  1. How do you interpret inequalities involving absolute values geometrically?
  2. Can you solve a similar inequality with multiple absolute values?
  3. How would the solution change if the inequality had a different constant, such as 800?
  4. What would happen if the inequality used a different operation (e.g., subtraction instead of addition)?
  5. Can you solve absolute value equations similarly?

Tip: When solving absolute value inequalities, remember to split them into two cases based on the definition of absolute value.

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Math Problem Analysis

Mathematical Concepts

Inequalities
Absolute Value
Algebra

Formulas

|A| ≥ B ⇔ A ≥ B or A ≤ -B

Theorems

Properties of Absolute Value Inequalities

Suitable Grade Level

Grades 9-11