Evaluate.-2 ? (-1) ? (-8) ? (-2)
A. -32
B. 32
C. -4
D. 18
Answer: B
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Determine whether the graph of the equation or function has symmetry about the x-axis, the y-axis, and the origin.f(x) = 5x3
A. x-axis B. Origin C. y-axis D. No symmetry
Solve the given trigonometric equation analytically (using identities when necessary for exact values when possible) for values of x for 0 ? x < 2?.cos2 x + 2 cos x + 1 = 0
A. 
B. 
, 
C. ?
D. 
, 
Find a general expression for the slope of a tangent line to the indicated curve.y = 8 - 8x3
A. 8 - 24x2 B. -24x2 C. -24x3 D. 8 - 8x2
Solve the problem.On a Touch-Tone phone, each button produces a unique sound. The sound produced is the sum of two tones, given by y = sin (2?lt) and y = sin (2?ht)where l and h are the low and high frequencies (cycles per second) shown on the illustration.
The sound produced is thus given by y = sin (2?lt) + sin (2?ht)Write the sound emitted by touching the 7 key as a product of sines and cosines.
A. y = 2 sin(2061?t) cos(357?t) B. y = 2 sin(357?t) cos(2061?t) C. y = 2 sin(2188?t) cos(484?t) D. y = 2 sin(484?t) cos(2188?t)