Express the given function as a composite of functions f and g such that y = f(g(x)).y = 
A. f(x) = 
, g(x) = x2 - 9
B. f(x) = 
, g(x) = - 
C. f(x) = 
, g(x) = x2 - 9
D. f(x) = 
, g(x) = x - 9
Answer: A
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A. 
; 1
B. 
; series diverges
C. 
; series diverges
D. 
; 
Solve the problem.A harmonic oscillator can be modeled by the equation 
where T is the time for one period and ? is the phase constant. Solve for t.
A. t = 
B. t = 
C. t = 
cos-1 
D. t = 
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If the standard s is 20.7, solve the inequality for the length ?. Express the answer in set-builder notation.
A. { ? 
}
B. { ? 
}
C. { ? 
}
D. { ? 
}
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A. {-
, 
}
B. {17.5}
C. {-7, 7}
D. {8}