Solve the problem.Express sin 4x in terms of sin x.
A. 4 sin x 
(1 - 2 sin2x)
B. 3 sin x - 4 sin3x
C. 4 sin x - 8 sin3x 
D. 4 sin3 x(1 - 2 sin2x)
Answer: A
Mathematics
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Use the table of values of f to estimate the limit.Let f(x) = x2 + 8x - 2, find 
f(x).
A. 
; limit = 5.40
B. 
; limit = 17.70
C. 
; limit = ?
D. 
; limit = 18.0
Mathematics
Find the exact value of the real number y.y = sec-1 
A. 
B. 
C. 
D. 
Mathematics
Multiply. Simplify by combining like terms.(m2 + 0.4n)(m2 - 0.4n)
A. m4 - 0.16m - 0.16n2 B. m4 - 0.16n2 C. 2m4- 0.8n2 D. m4 + 0.16n2
Mathematics
Determine two pairs of polar coordinates for the point with 0° ? ? < 360°.(-5
, -5
)
A. (5
, 225°), (-5
, 45°)
B. (10, 135°), (-10, 225°)
C. (5
, 135°), (-5
, 225°)
D. (10, 225°), (-10, 45°)
Mathematics