Can someone plz help plz

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

What is the value of x? enter your answer in the box. (cm)

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?