The graph below models the late fee for overdue books at the library what is the unit rate for the cost of an overdue book at this library?
A)$2 per day
B)$4.50 per day
C)$0.50 per day
D)$1 per day

The graph below models the late fee for overdue books at the library what is the unit rate for the cost of an overdue book at this library A2 per day B450 per d class=