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 angle to the wind produces the maximum sailing speed? What is the speed to the nearest knot, of the sailboat sailing at 150° angle to the wind? 
A. 150°; 6 knots
B. 120°; 6 knots
C. 150°; 8 knots
D. 120°; 8 knots
Answer: B
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Use an increment of 0.02 to estimate the value of 
at 
if 
varid="variable_id_field" variablename="impvar_8fddb0954e354f7a8778f66ad" />. ? A. 0.0404 B. 2.02 C. 0 D. None of the above
Evaluate.
3
A. 
B. 
C. 
D. 3
Find the intersection.8x - 4y - 6z = 6, -6x - 4y + 3z = 7
A. x = -36t - 
, y = 12t - 
, z = -56t
B. x = 2016t - 4, y = -672t - 92, z = 56t
C. x = 36t + 4, y = -12t + 92, z = 56t
D. x = -36t - 4, y = 12t + 92, z = 56t
Solve the problem.A racetracks curve is banked so that the outside of the curve is slightly elevated or inclined above the inside of the curve. This inclination is called the elevation of the track. The maximum speed on the track in miles per hour is given by 
where r is the radius of the track in miles and ? is the elevation in degrees. Find the maximum speed for a racetracks with an elevation of 26° and a radius of 
Round to the nearest mile per hour.
A. 186 miles per hour B. 157 miles per hour C. 54,680 miles per hour D. 34,646 miles per hour