Find a point-slope form for the equation of the line satisfying the conditions.Passing through (9, -9) and (8, -6)
A. y = -9(x + 3) + 9
B. y = 9(x - 3) - 9
C. y = 3(x + 9) + 9
D. y = - 3(x - 9) - 9
Answer: D
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Find an approximate value for the integral, using the trapezoidal rule with n intervals. Round the answer to the nearest tenth if necessary.
n = 3
A. 7.1 B. 0.6 C. 5.1 D. 3.5
Solve for the angle ?, where 0 ? ? ? 2?cos2? = 
A. ? = 
, 
, 
, 
B. ? = 
, 
, 
, 
C. ? = 0, ?, 2?
D. ? = 
, 
, 
, 
The following double-bar graph illustrates the revenue for a company for the four quarters of the year for two different years. Use the graph to answer the question. 
What was the difference in revenue between the fourth quarter of 2009 and the fourth quarter of 2010?
A. $5 million B. $3 million C. $15 million D. $1 million
Solve the problem.Use the formula L = 10 ? log 
, where the loudness of a sound in decibels is determined by I, the number of watts per square meter produced by the soundwave, and 
A certain noise produces 6.35 × 10-4 W/m2 of power. What is the decibel level of this noise?
A. 203 dB B. 78 dB C. 88 dB D. 9 dB