Chandra can embroider logos on a teams sweatshirts in 6 hrs. traci needs 9 hrs to complete the same job. how long will it take them to do it together?

Which expression is equivalent to? assume x > 0 and y > 0.

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.

Which number line correctly shows 0.8 + 0.3?