The International Shark Attack File recorded the number of shark attacks between 1837 and 2016 for 8 different U. S. states. What is the mean number of shark attacks over these states?

4,8, 5, 13,3,4, 1, 10

Which expression gives the area of the triangle shown below

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

Due to bad planning, two of the local schools have their annual plays on the same weekend. while 457 people attend one, and 372 attend the other, only 104 people were able to attend both. how many people went to at least one play?