1. The following data represent the monthly cell phone bill for a person's phone for six randomly selected months.
$35.34, $42.09, $39.43, $38.87, $43.39, $49.26
Compute the mean, median, and mode phone bill. (Round to the nearest cent as needed)
2. A professor has recorded exam grades for 10 students in his class, but one of the grades is no longer readable. If the mean score on the exam was 81 and the mean of the 9 readable score is 84, what is the value of the unreadable score?