Find the exact function value.cos-1
A. 
B. 
C. 
D. 
Answer: B
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Solve the problem.Starting at point A, a ship sails 65 km on a bearing of 192°, then turns and sails 42 km on a bearing of 336°. Find the distance of the ship from point A. (Note that bearings are measured from north, clockwise.)
A. 82 km B. 40 km C. -25 km D. 107 km
Solve the problem.Suppose that the salinity S of ocean water at a given depth d is modeled by the equation 
where S is measured in grams salt per kilogram water and d is measured in meters. What is the salinity when the depth is 688 m? Round your answer to the nearest hundredth.
A. -29.93 g salt/kg water B. 37.87 g salt/kg water C. 94.82 g salt/kg water D. 97.62 g salt/kg water
Simplify the expression.6
(
+ 
)
A. 6
+ 7
B. 6
+ 7
C. 6
+ 42
D. 42
+ 42
Multiply.5y2(8y2 + 2y + 6)
A. 40y4 + 10y + 30 B. 13y4 + 7y + 11 C. 40y4 + 10y3 + 30y2 D. 40y4 + 10y2 + 30