Below Is a Graph of the Rate R in Arrivals

question 28

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 length of the line at 7:10.

• A)240
• B)340
• C)440
• D)540

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