Solve the problem.The position(in feet) of an object oscillating up and down at the end of a spring is given by 
at time t (in seconds). The value of A is the amplitude of the motion, k is a measure of the stiffness of the spring, and m is the mass of the object. Find the object's velocity at time t.
A. v = A
cos 
ft/sec
B. v = A
cos 
ft/sec
C. v = A cos 
ft/sec
D. v = - A
cos 
ft/sec
Answer: B
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Find the volume of the solid generated by revolving the region about the given axis. Use the shell or washer method.The region in the first quadrant bounded by x = 2y - y2 and the y-axis about the line x = -1
A. 
?
B. 
?
C. 
?
D. 
?
Find the expression that is equivalent to the given rational expression.
A. 
B. 
C. 
D. - 
Solve the problem.The length of a rectangular room is 8 feet longer than twice its width. Its perimeter is 136 feet. Find the dimensions of the room (length and width).
A. width: 25 ft; length: 58 ft B. width: 30 ft; length: 38 ft C. width: 40 ft; length: 96 ft D. width: 20 ft; length: 48 ft
Find the product.(3m2)(3m4)
A. -9m B. 9m C. -9m6 D. 9m6