Models Salinity of Ocean Water to Depths of 1000 Meters

Multiple Choice

models salinity of ocean water to depths of 1000 meters at a certain latitude. x is the depth in meters and f(x) is in grams of salt per kilogram of seawater. Approximate the depth (to the
Nearest tenth of a meter) where the salinity equals 35.

A) -1.0 g/kg
B) 22.5 g/kg
C) 20.5 g/kg
D) -0.9 g/kg