Please answer correctly Explain well

For which pair of functions is (gof)(a)=|a|-2?

The clayton family’s pool has vertices at the coordinates (0, 2), (0, 5), (2, 5), (2, 6), (5, 6), (5, 1), (2, 1), and (2, 2). if each grid square has an area of 9 square feet, what is the area of the pool?

Leslie started last week with $1200 in her checking account. during the week, she wrote the checks below.