Please help y < 5 inequality

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?

Can someone check if i did this correct. it’s number 4 if you’re wondering.

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did