Solve the problem.Suppose f(x) = 31.2 + 1.3 log(x + 1) models salinity of ocean water to depths of 
at a certain latitude. x is the depth in meters and f(x) is the salinity in grams of salt per kilogram of seawater (expressed as parts per thousand or ppt). Approximate the salinity, to the nearest hundredth, when the depth is 346 meters.
A. 77.96 ppt
B. 80.56 ppt
C. -27.90 ppt
D. 34.50 ppt
Answer: D
Mathematics
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and 
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A. 
; 
B. 
; 
C. 
; 
D. - 
; - 
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A. 4ab B. 8ab C. 4a + 4b D. 4a + b
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Find the solution set for the equation.3|x - 3| = 18
A. {9, -3} B. ? C. {3} D. {3, -9}
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Using the restrictions stated for the function, find a rule for f-1.f(x) = x2 - 15, x ? 0
A. f-1(x) = 
B. f-1(x) = - 
C. f-1(x) = - 
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Mathematics