Choose the One Alternative That Best Completes the Statement or Answers

question 113

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
-Suppose $f ( x ) = 32.6 + 1.3 \log ( x + 1 )$ 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) \(- 1.0 \mathrm {~g} / \mathrm { kg }\)
• B) \(69.2 \mathrm {~g} / \mathrm { kg }\)
• C) \(- 0.9 \mathrm {~g} / \mathrm { kg }\)
• D) \(71.2 \mathrm {~g} / \mathrm { kg }\)