Solve the problem.Suppose f(x) = 33.6 + 1.4log (x + 1) models salinity of ocean water to depths of 
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 38.
A. -0.9 meters
B. 1390.5 meters
C. -1.0 meters
D. 1388.5 meters
Answer: D
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