Question

Use the image to answer the question.

A piecewise linear function consisting of five parts is plotted in quadrant 1 of a coordinate plane. The x-axis is labeled Time in minutes, and the y-axis is labeled Distance in miles.
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On Monday, Cheyenne starts with a slow jog for five minutes. She then increases her rate to a faster constant pace for five minutes. She takes a five-minute break, then runs for another 5 minutes at a constant pace to finish her two-mile run. She rests for the rest of the time. What domain interval represents her fastest pace of the run?

(1 point)

0≤m<5


5≤m<10


0.25≤m<1.5


15≤m<20

Answer 1

15 ≤ m < 20

Reason: fastest pace = steepest (greatest rise per minute). The final 5‑minute segment (15–20 min) shows the largest increase in distance, so 15 ≤ m < 20.