PLZ HELP it’s khan academy simple functions

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?

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.