Solve the problem.A weight attached to a spring is pulled down 5 inches below the equilibrium position. Assuming that the period of the system is 
second, determine a trigonometric model that gives the position of the weight at time t seconds.
A. y = 5cos 
t
B. y = -5cos 16?t
C. y = 5cos 16?t
D. y = -5cos 8?t
Answer: B
Mathematics
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Calculate the area of the surface S. S is the portion of the cone 
+ 
= 
that lies between z = 2 and z = 6.
A. 72
?
B. 30
?
C. 30
D. 24
?
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Use the shell method to find the volume of the solid generated by revolving the region bounded by the given curves and lines about the y-axis.y = 
, y = 0, x = 1, x = 25
A. 
?
B. 840?
C. 
?
D. 
?
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Find the exact value of y, or state that y is undefined.y = tan-1 (1)
A. 
B. 
C. 
D. 
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Determine whether the relation is a function.
A. Function B. Not a function
Mathematics