A new teaching method to teach vocabulary to sixth-graders involved having students work in groups on an assignment to learn new words. After the lesson was completed, the students were tested at 1-month intervals. The average score for the class S (r) can be modeled by S()-94-18 In (+1) where is the time in months after completing the assignment. If the average score is 70, how many months have passed since the students completed the assignment? Round to the nearest month. month(s) have passed since the students completed the assignment. X