Help lol i suck at this

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

Three baby penguins and their father were sitting on an iceberg 0.50.50, point, 5 meters above the surface of the water. the father dove down 4.74.74, point, 7 meters from the iceberg into the water to catch dinner for his kids. what is the father penguin's position relative to the surface of the water?

W-16=-12 solve each one step equation plz