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

Question

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

Quizplus · Accepted Answer

The Answer of 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

Below Is a Graph of the Rate R in Arrivals