Express the product as a sum containing only sines or cosines.sin(6?) sin(3?)
A. 
[ cos(3?) - cos(9?)]
B. 
[cos(9?) - cos(3?)]
C. sin2(18?2)
D. 
[sin(9?) + cos(3?)]
Answer: A
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Solve the problem.The graph shows the increase in dental contacts per person from 1990 to 1998.Dental Contacts Per Person
YearAssume that the rate of increase continues for the next several years. Using the average yearly increase from 1990 to 1996 to find a linear model, predict the number of dental contacts per person in 2008.
A. 7.10 B. 2.83 C. 5.10 D. 5.60
Use the Laws of Exponents to simplify. Write the answer with positive exponents. All variables are nonzero.
A. 
B. 
C. 
D. y13
Refer to the weighted voting system 
and the Banzhaf definition of power. (The four players are P1, P2, P3, and P4.)What is the total number of winning coalitions?
A. 5 B. 1 C. 15 D. 3 E. none of these
Graph the inequality.y > -2x - 4
A. 
B. 
C. 
D. 