Each day that a library book is kept past its due date, a $0. 30 fee is charged at midnight. Which ordered pair is a viable solution if x represents the number of days that a library book is late and y represents the total fee? a. (–3, –0.90).
b. (–2.5, –0.75).
c. (4.5, 1.35).
d. (8, 2.40).