Each day that a library book is kept past its due date, a $0.30 fee is charged at midnight. Which ordered pair is 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)
Answer:
d. (8, 2.40)