Find the angle between the given vectors to the nearest tenth of a degree.u = 
i - 9j, v = 
i + j
A. 65.9°
B. 100.1°
C. 45.2°
D. 90.4°
Answer: B
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Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the 
. y = 8csc x, y = 8
, 
? x ? 
A. 64?2 + 128? B. 8?2 - 64? C. 64?2 - 128? D. ?2 + 16?
Solve the problem.The elk population in a certain region is given by the function 
where the time t is measured in years. What is the largest number of elk present in the region at any time?
A. 1320 elk B. 1180 elk C. 140 elk D. 1460 elk
Solve.A rectangular plot of land measures 90 feet by 140 feet. Find its area.
A. 12,600 sq ft B. 1260 sq ft C. 230 sq ft D. 460 sq ft
Find the coordinates of the other endpoint of the segment, given its midpoint and one endpoint.midpoint 
, endpoint (3, 1)
A. (11, 5) B. (-1, -7) C. (-5, 3) D. (-5, -3)