Find the x- and y-intercepts. If no x-intercepts exist, state so. Round to two decimal places if necessary.y = 2x2 - 7
A. No x-intercept; y-intercept (0, -7)
B. x-intercepts (1.87, 0) and (-1.87, 0); y-intercept (0, -7)
C. x-intercepts (1.87, 0) and (-1.87, 0); y-intercept (0, 7)
D. x-intercept (1.87, 0); y-intercept (0, -7)
Answer: B
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An observer for a radar station is located at the origin of a coordinate system. For the point given, find the bearing of an airplane located at that point. Express the bearing using both methods.(-8, -8)
A. 225°; S 45° E B. 225°; S 45° W C. 315°; N 45° W D. 315°; N 45° E
Use identities to find the indicated value for each angle measure.tan ? = 
, ? < ? < 
Find sin(2?).
A. 
B. - 
C. - 
D. 
Graph the function over a one-period interval.y = 
sin (2x - ?) + 3
A. 
B. 
C. 
D. 
Perform the indicated operation. If possible, simplify.Simplify:
A. 1 - sin x B. cos x C. cos2 x D. 1 + sin x