Simplify the expression.
A. -csc x
B. sin x
C. - sin x
D. csc x
Answer: A
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Solve the problem.The velocity of a body of mass m falling from rest under the action of gravity is given by the equation 
where k is a constant that depends on the body's aerodynamic properties and the density of the air, g is the gravitational constant, and t is the number of seconds into the fall. Find the limiting velocity, limt?? v, of a 150 lb. skydiver (mg = 150) when k = .006.
A. 50.00 ft/sec B. 0.01 ft/sec C. 158.11 ft/sec D. There is no limiting speed.
Provide an appropriate response.What conditions must be placed on the values of x and y so the expression 
will be equal to the expression 
+ 
?
A. y must always be negative. B. x and y must have opposite signs or at least one be zero. C. x and y must have the same signs or at least one be zero. D. y must always be positive.
Solve the problem.A cruise boat travels 48 miles downstream in 3 hours and returns to its starting point upstream in 6 hours. Find the speed of the stream.
A. 28 mph B. 12 mph C. 16 mph D. 4 mph
Solve the problem.A wheel with a 17-inch diameter is turning at the rate of 34 revolutions per minute. To the nearest inch, what is the speed of a point on the rim in in./min?
A. 1862 in./min B. 1816 in./min C. 1823 in./min D. 1869 in./min