Find the center and radius of the circle, and sketch its graph.
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A. Centre (0, 0), Radius 16
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B. Centre (0, 0), Radius 4
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C. Centre (0, 0), Radius 4
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D. Centre (0, 0), Radius 16
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E. Centre (0, 0), Radius 4
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Answer: C
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Solve the problem.While bungee jumping, Gregory falls from a height of 80 feet. He continues to bounce one-half the height from which he last fell. Write out the first five terms of this geometric sequence and find the general term.
A. 80, 40, 20, 10, 5; an = 
B. 40, 20, 10, 5, 
; an = 
C. 80, 40, 20, 10, 5; an = 
D. 80, 78, 76, 74, 72; an = 80 - 2(n - 1)
Use integration by parts to establish a reduction formula for the integral.
, n ? 1
A. 
= 
cotn-1 x - 
B. 
= 
cotn-1 x + 
C. 
= 
cotn-2 x - 
D. 
= - cotn-1 x + 
Find an equation of the line having the given slope and containing the given point. m = -5, (2, 5)
A. y = -5x + 
B. y = - 
x + 15
C. y = -5x + 15
D. y = -5x - 15
Find the following. Assume that letters can represent any real number.
A. 
B. 
C. 
D. 3a + b