Evaluate

7w-9p when w=7 and p= -7

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi

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.