Kelly's dad compares her running time in a marathon to her times for last year's race. he records whether she has increased or decreased her time for the first three stages of the race. what is the total increase or decrease in kelly's time? did she improve her time? explain.

Luke started a weight-loss program. the first week, he lost x pounds. the second week, he lost pounds less than times the pounds he lost the first week. the third week, he lost 1 pound more than of the pounds he lost the first week. liam started a weight-loss program when luke did. the first week, he lost 1 pound less than times the pounds luke lost the first week. the second week, he lost 4 pounds less than times the pounds luke lost the first week. the third week, he lost pound more than times the pounds luke lost the first week.