7. Which one of the following is an arithmetic sequence? O A. 35, 5, 85, 1.1, 1.22, .
O B.-2, 1,4,7, 10, ..
O C.5, 0,-1, -3, -7, ...
O D.2,3,5, 7, 11, 13, 17,

The table shows the webster family’s monthly expenses for the first three months of the year. they are $2,687.44, $2,613.09, and $2,808.64. what is the average monthly expenditure for all expenses?