Evaluate the integral.
A. 24?2
B. 36?2
C. 27?2
D. 72?2
Answer: C
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Find the area or volume.Find the volume of the solid generated by revolving the region under the curve 
in the first quadrant about the y-axis.
A. 64? B. 8?3 C. 8? D. 4?
Express the sum or difference as a product of sines and/or cosines.cos(4?) - cos(6?)
A. -2 cos(5?) sin ? B. 2 sin(5?) sin ? C. -2 sin(5?) sin ? D. cos(-2?)
Factor the polynomial completely. If the polynomial cannot be factored, write "prime."-yz5- y5z
A. -yz(y + z)(y4 - yz + z4) B. -yz(y4 + z4) C. -yz(y - z)(y - z) D. -yz(y - z)(y4 + yz + z4)
Solve.In a class of 14 students, 2 students got an A, 5 students got a B, 4 students got a C, and 3 students got a D on a test. How many ways can the grades be assigned?
A. 84,084 B. 1,681,680 C. 420,420 D. 2,522,520