Solve the problem.A simple harmonic motion is described by the equation 
where x is the displacement in meters and t is time in seconds. Find positive values of t for which the displacement is 
.
A. 
+ 4n sec, 
+ 4n sec, n an integer
B. 
+ 4n sec, 
+ 4n sec, n an integer
C. 
+ 4n sec, 
+ 4n sec, n an integer
D. 
+ 4n sec, 
+ 4n sec, n an integer
Answer: B
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Find the volume of the solid generated by revolving the region about the given line.The region in the first quadrant bounded above by the line y = 7, below by the curve y = 
, and on the left by the y-axis, about the line x = -1
A. 
?
B. 
?
C. 
?
D. 
?
Determine whether the graph of the equation is symmetric with respect to the x-axis, the y-axis, and/or the origin.y = (x + 8)(x - 2)
A. origin B. x-axis C. y-axis D. x-axis, y-axis, origin E. none
Using the restrictions stated for the function, find a rule for f-1.f(x) = (x - 20)2, x ? 20
A. f-1(x) = x2 + 20
B. f-1(x) = 
C. f-1(x) = 
+ 20
D. f-1(x) = - 
Solve.The sum of two numbers is 15, and the sum of their squares is 113. Find the numbers.
A. 7 and 8 B. 8 and 7 C. 9 and 6 D. 10 and 5