At the surface of the ocean, the water pressure is the same as the air pressure above the water, 15 lb/in2. Below the surface, the water pressu Increases by 4.46 lb/in² for every 10 ft of descent.
(a) Express the water pressure P as a function of the depth below the ocean surface d.
P=0.446d+15. x
(b) At what depth is the pressure 100 lb/in2? (Round your answer to the nearest integer.)
