Solve the problem.Suppose f(x) = 28.9 + 1.5 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 in grams of salt per kilogram of seawater. Approximate the salinity (to the nearest hundredth) when the depth is 572 meters.
A. 78.21 g/kg
B. 81.21 g/kg
C. -24.76 g/kg
D. 33.04 g/kg
Answer: D
Mathematics
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Use natural logarithms to solve the exponential equation. If necessary, round to the nearest thousandth.3e4x + 5 = 12
A. 1.750 B. -0.903 C. -1.043 D. 1.597
Mathematics
Evaluate the integral.
A. 
ln
- 
ln
+ 
tan-1(et) + C
B. 
ln
- 
ln
+ C
C. 
ln
+ 
ln
+ 
tan-1(et) + C
D. 
ln
- 
ln
+ 
tan-1 t + C
Mathematics
Find the component form of the specified vector.Let u = 
, v = 
. Find u - v.
A. 
B. 
C. 
D. 
Mathematics
Solve the equation.x4 - 5x2 - 36 = 0
A. {3, -3, 2i, -2i} B. {3i, -3i, 2i, -2i} C. {2, -2, 3i, -3i} D. {3, -3, 2, -2}
Mathematics