Solve the problem.
Trains S and T are both traveling in the same direction. Their distances in miles North of Detroit after x hours are computed by the functions fS and fT, respectively, and their graphs are shown in the figure for 
During what time interval is Train T closer to Detroit than Train S?
A. Always, or x ? 0
B. Between 0 and 3.3 hours, or 0 ? x < 3.3
C. Between 3.3 and 8 hours, or 3.3 < x ? 8
D. After 3.3 hours, or x > 3.3
Answer: B
Mathematics
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