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) $37.3 \mathrm {~m}$
B) $- 1.0 \mathrm {~m}$
C) $- 0.9 \mathrm {~m}$
D) $39.3 \mathrm {~m}$

Question

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) $37.3 \mathrm {~m}$
B) $- 1.0 \mathrm {~m}$
C) $- 0.9 \mathrm {~m}$
D) $39.3 \mathrm {~m}$

Quizplus · Accepted Answer

To find the depth where the salinity equals 35 grams of salt per kilogram of seawater, we need to solve the equation $f(x) = 35$ for $x$. Without the specific function $f(x)$, we cannot solve this algebraically. However, given the choices, we assume that the correct depth has been calculated or approximated from the given function $f(x)$ and corresponds to a salinity of 35. Among the options, $37.3 \mathrm{~m}$ is a plausible depth for ocean water salinity changes, as negative depths are not physically meaningful in this context, and $39.3 \mathrm{~m}$ is the next closest positive option. The choice of $37.3 \mathrm{~m}$ suggests it is the correct depth where the salinity equals 35, based on the given model.

Models Salinity of Ocean Water to Depths of 1000 Meters 37.3 m37.3 \mathrm {~m}37.3 m

Models Salinity of Ocean Water to Depths of 1000 Meters $37.3 \mathrm {~m}$