Answer:
The total late fee paid
Explanation:
The second term of the expression, 0.25x, represents the total late fee paid.
The late fee is calculated by multiplying the number of days the book was overdue (x) by the late fee per dayTherefore, the total late fee paid can be found by substituting the number of days the book was overdue into the expression:
Total late fee = 0.25 × x
For example, if Ruth returned the book 5 days after the due date, the total late fee would be:
Total late fee = 0.25 × 5 = 1.25