Solve the problem.Two friends decide to meet in Chicago to attend a Cub's baseball game. Rob travels 
in the same time that Carl travels 
Rob's trip uses more interstate highways and he can average 
more than Carl. What is Rob's average speed?
A. 63 mph
B. 71 mph
C. 55 mph
D. 60 mph
Answer: A
Mathematics
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i; C is the region defined by the polar coordinate inequalities 2 ? r ? 4 and 
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