Sadie is the school historian this year. One of her jobs is to determine whether any school records are broken during the year.
Sadie knows that the school record for the 100-meter dash is 18 seconds. During last weekend's race, the track coach timed the team members with a stopwatch. He told Sadie that he thinks at least one student broke the record.
The race times recorded by the coach are shown in the table below.
Team Member Time (seconds)
Juan 18
Hans 17
Keith 16
Aaron 20
