Express the product as a sum containing only sines or cosines.2 cos(7?) cos ?
A. cos(14?) + cos(2?)
B. cos(10?) + sin(4?)
C. cos(8?) + cos(6?)
D. cos(8?) + sin(6?)
Answer: C
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Find the volume of the solid generated by revolving the region about the given axis. Use the shell or washer method.The region bounded by y = 6x - x2 and y = x about the line x = 5
A. 
?
B. 
?
C. 
?
D. 
?
Solve the problem.The circle graph shows the fraction of books read by students in grades one through five. What fraction of books was read by students in fourth and third grades combined?
A. 
of books
B. 
of books
C. 
of books
D. 
of books
Find ?y and f '(x) ?x for the given function.y = f(x) = x - x2, x = 6, and ?x = 0.04
A. -0.4416; -0.44 B. -0.4416; -0.352 C. -0.4416; -0.52992 D. -0.44; -0.352
Add and simplify. Write the answer as an improper fraction as needed.
+ 
A. 
B. 
C. 
D. 