Multiple Choice
Below is a graph of the rate r in arrivals per minute at which students line up for breakfast. The first people arrive at 6:50 am and the line opens at 7:00 am. The line serves students at a constant rate of 20 students per minute. Estimate the time at which the line disappears.
A) 7:10 am or earlier
B) 7:20 am
C) 7:30 am
D) 7:40 am or later
Correct Answer:

Verified
Correct Answer:
Verified
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