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Mr. Baker leaves the check-in counter at the airport and walks to a moving sidewalk, which takes him to his gate. Mr. Baker's distance (d), in meters, from the check-in counter while he has been standing on the moving sidewalk for s seconds, is described by the function d = 2s + 20.
Which statement is true?
A. Mr. Baker is 2 meters from the check-in counter after 22 seconds.
B. Mr. Baker is 20 meters from the check-in counter 24 seconds.
C. Mr. Baker moves 2 meters per second while standing on the moving sidewalk, and he walked 20 meters to get to the moving sidewalk.
D. Mr. Baker moves 20 meters per second while standing on the moving sidewalk, and he walked 2 meters to get to the moving sidewalk.
Sagot :
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