A professor has recorded exam grades for 30 students in his class, but one of the grades is no longer readable. If the mean score on the exam was 82 and the mean of the 29 readable scores what is the value of the unreadable score?
The value of the unreadable score is

Catherine saved some money and plans to add the same amount each week to her savings account. the table represents the number of weeks that she will save, x, and the total amount of money that she will have in her account, y. weeks, x dollars in account, y 4 74 6 86 9 104 11 116 which linear equation represents catherine’s situation?