Michelle used a $20 bill to pay for a notebook that only costs p dollars how much change did michelle receive from the cashier? write your answer as an expression.

What is the value of y? round to the nearest tenth

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

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.