When you dive below the surface of the water, the pressure increases. You can feel this in your ears when you dive to the bottom of a deep swimming pool or spring. The function that describes this relationship is P ( d ) = 14.5 + 29 66 d , where d is the depth in feet below the surface of the water and P is the pressure in pounds per square inch (PSI).

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graph them on a graphing calculator, press 2nd trace. select intersect. hit enter until it says answer. ti 84 works best

step-by-step explanation:

-3.5 degrees per hour

step-by-step explanation:

find the unit rate:

-12   1/4 degrees           12.25 degrees

= - = -3.5 degrees per hour

      3   1/2 hours               3.5 hours

time is equal to distance over rate so

t = d/r

need a little bit more information for the second question.