Question 1065106
We'll assume that each quiz is weighted the same.  Thus far, the student's average is 72 on 7 quizzes for a point total of 504 out of a possible 700 points.  The student wants to achieve 75% out of a possible 800 points.  0.75 * 800 = 600 points needed.  He already has 504.  He will need to score 600-504 on the next exam; a score of 96.  He had better start hitting the books!