If you have ever been swimming underwater, you know that one of the things you have to deal with is the weight of the water surrounding you. As you dive deeper, the total amount of water over you increases and so does its weight. Ocean water, because it contains salt, is heavier than fresh water. You can use the following models to find the amount of water pressure you will experience based on the depth of the water: For fresh water: P = 62.4h For ocean water: P= 64.3h For both of these formulas, P is measured in pounds per square feet (that is, '/6-2 ) and h is measured in feet below the surface of the water. 1. What is the independent variable in either formula? 2. What is the dependent variable in either formula? 3. What is the water pressure in fresh water at a depth of 12 feet? Use correct units in your