Please help ASAP I’m stuck on this

W-16=-12 solve each one step equation plz

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.

On average, a continental shelf drops 0.12 m per 100 m. at 22.5 m from the shoreline, how much distance has the continental shelf dropped?