Suppose a fishery biologist takes 500 bass from a lake, tags them, and then releases them back into the water. Several days later, the biologist nets a sample of 200 bass, of which 30 are tagged How many bass are in the lake?

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.