Robert needs four shelves from a broad that is 2.5 meter long. the second shelf 18 centimeters longer than twice the length of the first shelf. the third shelf is 12 centimeters shorter than first shelf. the remaining shelf is 4 centimeters long than the first shelf. if robert must use the entire 2.5 meter board for shelves, what is the length of the second shelf, in centimeters

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.