At sea level, the weight of the atmosphere exerts a pressure of 14.7 pounds per square inch, commonly referred to as 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 depthd (in feet). (B) Interpret the slope of the model. (C) Find the pressure at a depth of 50 ft. (D) Find the depth at which the pressure is 5 atms. ... (A) Choose the correct linear model below. A. P= 0.03d + 1 B. P= 0.445d + 14.7 O C. P=2.245d – 33 D. P= 0.445d + 29.4 (B) Choose the correct interpretation of the slope of the model below. 2 It is the rate of change of pressure with respect to depth in units of Ib / in per foot. It is the rate of change of depth with respect to pressure in units of feet per Ib / in. (C) What is the pressure at a depth of 50 ft? pounds per square inch (Round to the nearest integer as needed.)

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