PLEASE HELP mE: Which of the following expressions is equivalent to 12 + 30y?

How is the number of vertices for a prism related to the name of the prism

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

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.