Get the most out of your questions with IDNLearn.com's extensive resources. Get accurate and comprehensive answers from our network of experienced professionals.

Which of the following is the correct graph of the compound inequality [tex]4p + 1 \ \textless \ -11[/tex] or [tex]6p + 3 \ \textgreater \ 39[/tex]?

A.
B.
C.
D.


Sagot :

To solve the given compound inequality [tex]\( 4p + 1 < -11 \)[/tex] or [tex]\( 6p + 3 > 39 \)[/tex], we need to solve each inequality separately and then combine the results.

### Step-by-Step Solution

#### Solving the First Inequality: [tex]\( 4p + 1 < -11 \)[/tex]
1. Subtract 1 from both sides of the inequality:
[tex]\[ 4p + 1 - 1 < -11 - 1 \][/tex]
[tex]\[ 4p < -12 \][/tex]

2. Divide both sides by 4:
[tex]\[ \frac{4p}{4} < \frac{-12}{4} \][/tex]
[tex]\[ p < -3 \][/tex]

Thus, the solution to the first inequality is:
[tex]\[ p < -3 \][/tex]

#### Solving the Second Inequality: [tex]\( 6p + 3 > 39 \)[/tex]
1. Subtract 3 from both sides of the inequality:
[tex]\[ 6p + 3 - 3 > 39 - 3 \][/tex]
[tex]\[ 6p > 36 \][/tex]

2. Divide both sides by 6:
[tex]\[ \frac{6p}{6} > \frac{36}{6} \][/tex]
[tex]\[ p > 6 \][/tex]

Thus, the solution to the second inequality is:
[tex]\[ p > 6 \][/tex]

### Combining the Solutions
The compound inequality involves "or" ([tex]\( \cup \)[/tex]), so the solution is the union of the two individual solutions:
[tex]\[ p < -3 \quad \text{or} \quad p > 6 \][/tex]

### Graph of the Solution
To graph this solution, we represent the intervals:

- For [tex]\( p < -3 \)[/tex]:
An open circle at [tex]\( p = -3 \)[/tex] indicating that [tex]\(-3\)[/tex] is not included, and shading to the left.

- For [tex]\( p > 6 \)[/tex]:
An open circle at [tex]\( p = 6 \)[/tex] indicating that [tex]\(6\)[/tex] is not included, and shading to the right.

Visually on a number line, it looks like this:

[tex]\[ \begin{array}{c|c|c|c|c|c|c|c|c|c|c|c|c|c|c|c|c} & & & & & & -3 & & & 6 & & & & & \\ \hline & & & & & \circ &\leftarrow&\leftarrow&\leftarrow& &\rightarrow&\rightarrow&\circ& & & & \\ \end{array} \][/tex]

The graph shows:

- Numbers to the left of [tex]\(-3\)[/tex] (shaded to the left with an open circle at [tex]\(-3\)[/tex]).
- Numbers to the right of [tex]\(6\)[/tex] (shaded to the right with an open circle at [tex]\(6\)[/tex]).

This is the correct graphical representation of the given compound inequality.