Coach DeCaro records the cross country runners’ times compared to their personal best times.3K TimesRunnerTime compared to personal bestGregor+5.6Hiroki–11.6Isabelle+3.2Juan0Karen–5.2Which runners ran slower than their personal best?

A positive time difference means the runner took longer than their personal-best time, so they ran slower. Gregor’s time was 5.6 seconds over his best, and Isabelle’s was 3.2 seconds over hers. Juan matched his best, while Hiroki and Karen were under theirs. The correct choice is Gregor and Isabelle.

AI-written and checked against the verified answer.