Multiply.9 ? (-4)
A. -360
B. -136
C. -36
D. -45
Answer: C
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Express the product as a sum containing only sines or cosines.sin(7?) sin(4?)
A. 
[sin(11?) + cos(3?)]
B. sin2(28?2)
C. 
[cos(11?) - cos(3?)]
D. 
[ cos(3?) - cos(11?)]
The following question refers to a school district with three high schools. The total number of students in the district is 3000. The teachers within the district are apportioned to the high schools based on the schools' respective enrollments. The standard quota for each school is given in the following table.
Find the standard divisor for this apportionment problem.
A. 30 B. 10 C. 300 D. 100 E. none of these
Factor the polynomial completely. If a polynomial cannot be factored, state that it is irreducible.392x2 + 672x + 288
A. (56x + 48)(7x + 6) B. 8(49x2 + 84x + 36) C. 8(7x + 6)2 D. irreducible
Find the exact value of the given expression using a sum or difference formula.
A. 
B. 
C. 
D. 