Marketing surveys conducted by the sales manager for a company determined that 2,000 power drills could be sold for $30 each, but 3,000 drills could be sold for $20 each. If the price for every drill sold decreases by 1 cent how many drills can be sold for $22

The jewelry store is having a sale. necklaces that were regularly priced at $23.50 are on sale for $18.80. what is the percentage of decrease in the price of necklaces?

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.

How can you find the mean absolute deviation (mad) for this set of data?