LetU = {q, r, s, t, u, v, w, x, y, z} A = {q, s, u, w, y} B = {q, s, y, z} C = {v, w, x, y, z}Determine the following.A ? (B ? C)
A. {q, r, w, y, z}
B. {q, s, w, y}
C. {q, y, z}
D. {q, s, u, w, y, z}
Answer: B
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Perform the indicated operation or operations.
+ 
- 
A. 
B. 
C. 
D. 
Find the exact value under the given conditions.tan ? = 
, ? < ? < 
; cos ? = - 
, 
< ? < ?
Find tan (? + ?).
A. - 
B. 
C. - 
D. - 
Solve the problem.The wind is blowing at 10 knots. Sailboat racers look for a sailing angle to the 10-knot wind that produces maximum sailing speed. This situation is now represented by the polar graph in the figure shown below. Each point (r, ?) on the graph gives the sailing speed, r, in knots, at an angle ? to the 10-knot wind. What is the speed to the nearest knot, of the sailboat sailing at 60° angle to the wind? 
A. 6 knots B. 4 knots C. 5 knots D. 7 knots
Solve the problem.There are approximately 3.28 feet in 1 meter. How many meters are there in 55 feet? Round to the nearest hundredth.
A. 1.68 m B. 0.06 m C. 5.96 m D. 16.77 m