Question
Watch the video and then solve the problem given below.
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Solve and graph the compound inequality.
\( -7
Ask by Paul Parry. in the United States
Feb 25,2025
Ask by Paul Parry. in the United States
Feb 25,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
The solution set is \((-8, 9)\).
Solution
To solve the compound inequality \( -7 < x + 1 < 10 \), we will break it down into two separate inequalities and solve them step by step.
### Step 1: Solve the first inequality
The first part of the compound inequality is:
\[
-7 < x + 1
\]
To isolate \( x \), we subtract 1 from both sides:
\[
-7 - 1 < x
\]
\[
-8 < x
\]
This can be rewritten as:
\[
x > -8
\]
### Step 2: Solve the second inequality
The second part of the compound inequality is:
\[
x + 1 < 10
\]
Again, we isolate \( x \) by subtracting 1 from both sides:
\[
x < 10 - 1
\]
\[
x < 9
\]
### Step 3: Combine the results
Now we combine the results from both inequalities:
\[
-8 < x < 9
\]
### Step 4: Write the solution in interval notation
The solution set in interval notation is:
\[
(-8, 9)
\]
### Step 5: Graph the solution
To graph the solution, we will represent the interval \((-8, 9)\) on a number line. The endpoints \(-8\) and \(9\) are not included in the interval, so we will use open circles at these points.
Now, I will graph the solution.
### Final Answer
A. The solution set in interval notation is \((-8, 9)\).
If you need the graph, please let me know!
Answered by UpStudy AI and reviewed by a Professional Tutor
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Extra Insights
To solve the compound inequality \( -7 < x + 1 < 10 \), we can break it into two parts. First, solve the left part: \( -7 < x + 1 \) which simplifies to \( x > -8 \). Next, solve the right part: \( x + 1 < 10 \), giving us \( x < 9 \). Combining both parts, we have the solution \( -8 < x < 9 \). A. The solution set in interval notation is \( (-8, 9) \). Be sure to graph this solution on a number line; you'll have an open interval between -8 and 9, which means those endpoints are not included in the solution!