Determine the maximum number of turning points of f.f(x) = x4( x4 + 1)(2x + 5)
A. 9
B. 8
C. 16
D. 4
Answer: B
Mathematics
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Solve the inequality, then graph the solution.12 < 4z + 4 ? 28
A. (2, 6)
B. [2, 6)
C. (2, 6]
D. [2, 6]
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Find the exact value of the expression.cos 40° cos 20° - sin 40° sin 20°
A. 
B. 
C. 
D. 
Mathematics
Use the graph to estimate any solutions to the given equation on the interval 
sec2 x = 2 sec x
A. 
, 
B. None
C. 
, 
D. 
, 
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Write the expression in lowest terms.
A. 
B. 
C. 
D. 
Mathematics