Question

Camilla borrows a book from the library for ddd days. The library charges a late fee of 0.100.100, point, 10 dollars per day that the book is late.

If Camilla returns the book more than 212121 days after she borrowed it, the expression 0.10(d-21)0.10(d−21)0, point, 10, left parenthesis, d, minus, 21, right parenthesis represents the total late fee Camilla owes.




What does (d-21)(d−21)left parenthesis, d, minus, 21, right parenthesis represent in this context?

Answer 1

(d -21) is the number of days the book is late

Explanation:

Answer 2

(d -21) is the number of days the book is late

Explanation:

There is no fee if the book is returned within 21 days, so d-21 represents the number of "late days" for which a fee is charged.