How do u do this I need help please help me

Write the rational number in lowest terms 99/-15

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?

Including 6% sales tax, an inn charges $135.68 per night. find the inns nightly cost