Solve the Problem $S ( t )$ Can Be Modeled By $$S ( t ) = 96 - 10 \ln ( t + 1 )$$

Short Answer

Solve the problem.
-A new teaching method to teach vocabulary to sixth-graders involves 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 $S ( t )$ can be modeled by
$$S ( t ) = 96 - 10 \ln ( t + 1 )$$ where t is the time in months after completing the assignment. If the average score is 73, how many
months had passed since the students completed the assignment?
A) 11 months
B) 9 months
C) 12 months
D) 7 months