Help please hurry I don't have much time (And don't just put random stuff to steal my points again)

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.

V=x^4-y^4 pick three expressions that can represent the three dimensions of the prism (each in meters)

Find the measure of angle b in the following triangle