Juan and Patti decide to see who could read the most books in a month They began to keep track after Patti had already read 5 books that month This graph shows the number of books Patti read for the next 10 days Number of Books Read Books 5 O 10 15 20 25 20 15 10 s 1 2 3 4 5 6 7 8 9 10 Day If Juan hasn t read any books before the fourth day of the month and he reads at the same rate as Patti how many books will he have read by day 12