Rob had his favorite guitar tuned up and ready to take to a performance by his cover band at a local venue Saturday. He decides at the last minute to take x additional guitars, just in case his favorite guitar has an issue. IF the total number of guitars that Robert takes to the performances can be modeled as x+1, what does the "+1" account for in the expression?

Options

A. It accounts for an additional guitar that Rob returns to his house and picks up in the middle of the performance.
B. It accounts for his favorite guitar, which Rob was taking from the beginning.
C. It accounts for the number of additional guitars that Rob decided to take.
D. It accounts for an additional non-guitar musical instrument that Rob decided to take.

Answer

To solve the question, we need to analyze the expression \( x + 1 \) and understand what the "+1" represents in the context of Rob's guitar situation.

### Step-by-Step Solution:

1. **Identify the Variables**:
- Let \( x \) represent the number of additional guitars Rob decides to take.
- The expression for the total number of guitars Rob takes is \( x + 1 \).

2. **Understand the Expression**:
- The expression \( x + 1 \) indicates that Rob is taking \( x \) additional guitars plus one more guitar.

3. **Determine What "+1" Represents**:
- The "+1" in the expression accounts for Rob's favorite guitar, which he is taking with him to the performance.

4. **Conclusion**:
- Therefore, the total number of guitars Rob takes is the sum of his favorite guitar (which is 1) and the additional guitars (which is \( x \)). Hence, \( x + 1 \) correctly models the total number of guitars he is taking.

5. **Select the Correct Option**:
- Among the options provided, option B states that the "+1" accounts for his favorite guitar which Rob was taking from the beginning. This is the correct interpretation of the expression.

### Final Answer:
The "+1" in the expression \( x + 1 \) accounts for Rob's favorite guitar which he was taking from the beginning.