How did satellite tracking allow biologists to study the green sea turtle?

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?

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.

Icould really use some with this question.