At sea? level, the weight of the atmosphere exerts a pressure of 14.7 pounds per square? inch, commonly referred to as 1 atmosphere of pressure. As an object descends in? water, pressure P and depth d are linearly related. In salt? water, the pressure at a depth of 33 ft is 2? atms, or 29.4 pounds per square inch. ?(A) Find a linear model that relates pressure P? (in pounds per square? inch) to depth d? (in feet). ?(B) Interpret the slope of the model. ?(C) Find the pressure at a depth of 5050 ft. ?(D) Find the depth at which the pressure is 33 atms.