Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 2 - Section 2.3 - Getting Information from the Graph of a Function - 2.3 Exercises - Page 182: 61

Answer

Runner A won the race. Yes, all the runners finished the race. Runner B was running quite quickly but probably fell. After a couple of seconds, he or she was able to resume running and managed to get second place.

Work Step by Step

One can see that runner A got the quickest time to reach 100 meters. All runners finished the race because they reached 100 meters. At some interval, one can see that there is a slope of zero, indicating that runner B didn't move for a couple of seconds.
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