Solve the Problem $\mathrm { S }$ Of Ocean Water at a Given Depth

Multiple Choice

Solve the problem.
-Suppose that the salinity $\mathrm { S }$ of ocean water at a given depth $\mathrm { d }$ is modeled by the equation $\mathrm { S } ( \mathrm { d } ) = 29.9 + 1.4 \log ( \mathrm { d } + 1 )$ , where $\mathrm { S }$ is measured in grams salt per kilogram water and $\mathrm { d }$ is measured in meters. What is the salinity when the depth is $998 \mathrm {~m}$ ? Round your answer to the nearest hundredth.

A) $88.29 \mathrm {~g} \mathrm { salt } / \mathrm { kg }$ water
B) $91.09 \mathrm {~g} \mathrm { salt } / \mathrm { kg }$ water
C) $34.10 \mathrm {~g}$ salt $/ \mathrm { kg }$ water
D) $- 25.70 \mathrm {~g} \mathrm { salt } / \mathrm { kg }$ water