1. A restaurant occupying the top floor of a skyscraper
rotates as diners enjoy the view. Ling and Sarah notice
that they began their meal at 7:00 p.m. looking due
north. At 7:45 p.m. they had rotated 180° to a view that
was due south. At this rate, how many degrees will the
restaurant rotate in 1 hour?
A. 90°
B. 180°
C. 240°
D. 2700
E. 4000