Solve the problem.An object has a frequency of 4 vibrations per second. Write an equation in the form d = sin ?t for the object's simple harmonic motion.
A. d = sin 8?t
B. d = sin 2?t
C. d = sin 8t
D. d = sin 
t
Answer: A
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Evaluate the expression.(-33)
A. -27 B. 27
Solve the problem.The level of a sound in decibels (db) is determined by the formula 
where I is the intensity of the sound in watts per square meter. What is the intensity of a noise measured at 53 db? Express the answer in scientific notation, rounded to two decimal places.
A. 2.00 × 10-7 watt/m2 B. 2.00 × 1014 watt/m2 C. 5.30 × 10-10 watt/m2 D. 2.00 × 10-6 watt/m2
Provide an appropriate response.Suppose a friend tells you that the graph of f(x) = 
has a vertical asymptote with equation x = 4. Is this correct? If not, describe the behavior of the graph at 
A. This is incorrect. The graph is actually the graph of y = x - 4 with a "hole" at 
B. This is incorrect. The graph is actually the graph of y = x + 4 with a "hole" at (4, 8).
C. This is incorrect. The graph has an oblique asymptote at x = 4.
D. This is correct.
Graph the hyperbola, the asymptotes, and the vertices of the fundamental rectangle.y2 - 
= 1
A. 
B. 
C. 
D. 