7. Reason Abstractly The number of customers in a store on the first day is represented by \( (6 x-3) \). The number of customers on the second day is represented by \( (x-1) \). Write an expression to find how many more customers visited the store on the first day. Then evaluate the expression if \( x \) is equal to 50 . (Example 6 )

To determine how many more customers visited the store on the **first day** compared to the **second day**, follow these steps: 1. **Identify the Expressions:** - **First Day Customers:** \( 6x - 3 \) - **Second Day Customers:** \( x - 1 \) 2. **Set Up the Expression for the Difference:** To find how many more customers visited on the first day, subtract the number of customers on the second day from the number on the first day. \[ \text{Difference} = (6x - 3) - (x - 1) \] 3. **Simplify the Expression:** \[ \begin{align*} \text{Difference} &= 6x - 3 - x + 1 \\ &= (6x - x) + (-3 + 1) \\ &= 5x - 2 \end{align*} \] So, the expression to find how many more customers visited on the first day is: \[ 5x - 2 \] 4. **Evaluate the Expression When \( x = 50 \):** Substitute \( x = 50 \) into the expression: \[ \begin{align*} \text{Difference} &= 5(50) - 2 \\ &= 250 - 2 \\ &= 248 \end{align*} \] **Therefore,** when \( x = 50 \), **248 more customers** visited the store on the first day compared to the second day.