In a normal distribution, what percent of the values lie within on standard deviation of the mean

Geometry answer picture question pls . reason and statements

An equation where variables are used to represent known values—function notation true or false

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?