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 length of the line at 7:10.
A)240
B)340
C)440
D)540

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 length of the line at 7:10. 
A)240 
B)340 
C)440 
D)540

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 length of the line at 7:10. 
A)240 
B)340 
C)440 
D)540

Below Is a Graph of the Rate R in Arrivals