Solve the problem.At a track meet, Russell ran the first heat of the 100-yd dash in 15.5 sec, Sergy in 15.8 sec, and Omar in 16.2 sec. In the second heat, they got 15.3 sec, 15.4 sec, and 15.7 sec. Write a 3 x 1 matrix giving the changes in times. If the changes repeat, who will win?
A. 
, Sergy
B. 
, Omar
C.
[-0.2 -0.4 -0.5], Russell
D.
[0.2 0.4 0.5], Sergy
Answer: A
Mathematics
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.
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- 
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