Study Set:
+25 Math Questions for SAT Prep - Group 1

When a scientist dives in salt water to a depth of 9 feet below the surface, the pressure due to the atmosphere and surrounding water is 18.7 pounds per square inch. As the scientist descends, the pressure increases linearly. At a depth of 14 feet, the pressure is 20.9 pounds per square inch. If the pressure increases at a constant rate as the scientist’s depth below the surface increases, which of the following linear models best describes the pressure p in pounds per square inch at a depth of d feet below the surface?

p = 0.44d+0.77

p = 0.44d + 14.74

p = 2.2d - 1.1

p = 2.2d -9.9