Claudia has four French exams this semester, each with a possible high score of 100 points. Claudia's scores for the first three exams are shown below:
• Exam 1: 88 points
• Exam 2: 95 points
• Exam 3: 73 points
• Exam 4: ???
What does she need to score on the fourth exam so that her average score is 84 points?
