A shark is swimming 60 feet below the surface of the ocean. There is a fish that is 25 feet deeper in the water. Use the expression (-60) + (-25) to describe the fish's location relative to the surface of the ocean
fish's location relative to the surface of the ocean is -25 ft. since the surface of the ocean is 0 ft. and the first is 25 ft deeper in the water, mean that -25 ft.