Solve the problem.Suppose f(x) = 29 + 1.2log (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 salinity (to the nearest hundredth) when the depth is 36 meters.
A. 44.28
B. -27.12
C. 46.68
D. 30.88
Answer: D
Mathematics
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Solve the problem.Students in English class must have an average between 80% and 90%, inclusive, of all work to receive a grade of B. Stan has 76% on homework, 81% on quizzes, and 89% on his research paper. What range of scores on the test would give him a B?
A. 74% or better B. 90% or better C. 65% or better D. 79% or better
Mathematics
Use a double-angle identity to find the exact value of the expression.2 cos2 75° - 1
A. - 
B. 
C. - 
D. 
Mathematics
Add.8.8 + 6.6
A. 2.2 B. -15.4 C. -2.2 D. 15.4
Mathematics
The graph of an ellipse is given. Find the standard form of the equation of the ellipse. 
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
- 
= 1
Mathematics