Rob has his favorite guitar tuned up and ready to bring to a performance by his cover band at a local venue Saturday. He decides at the last minute to bring x additional guitars, just in case his favorite guitar has an issue. If the total number of guitars that Robert brings to the performance can be modeled as x + 1, what does the "+ 1" account for in the expression?
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 bringing from the beginning.
C. It accounts for the number of additional guitars that Rob decided to bring.
D. It accounts for an additional non-guitar musical instrument that Rob decided to bring.
Answer:B
Rob has his favorite guitar tuned up and ready to bring to a performance by his cover band at a local venue Saturday. He decides at the last minute to bring x additional guitars, just in case his favorite guitar has an issue. If the total number of guitars that Robert brings to the performance can be modeled as x + 1, what does the "+ 1" account for in the expression?
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 bringing from the beginning. C. It accounts for the number of additional guitars that Rob decided to bring. D. It accounts for an additional non-guitar musical instrument that Rob decided to bring.
Explanation: B Since the question states that Rob is planning to bring his favorite guitar plus x additional guitars, he will have a total of x + 1 guitars. The question states that the variable x represents the number of additional guitars, so the number 1 must represent Rob's favorite guitar, which is (B).