Shelby is collecting 15 1⁄2 pounds of pebbles for a geology experiment. If she collects the pebbles in buckets that can hold 3 5⁄8 pounds of weight, how many buckets will she need? buckets (Hint: She will need a whole number of buckets.)

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.