Hayden cuts of 7 seconds off his time for every lap he runs around the track. At, noon the stopwatch reads 11:53 after he completes his fifth lap.

Question

I need the rule and the first four terms in the sequence for this situation/problem.

Answer 1

11:53, 11:46, 11:39, 11:32, 11:25

25, 32, 39, 46, 53 is an AP with d=7, a1=25, a5=53