Astudent writes the difference between 15 and the product of 5 and y to describe the expression 5y - 15.explain the error

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?

Three friends went on a road trip from phoenix, az, to san diego, ca. mark drove 50 percent of the distance. jason drove 1/8 of the distance. andy drove the remainder of the distance. 1. andy thinks he drove 1/4 of the distance from phoenix, az, to san diego, ca. is andy correct? 2. the distance from phoenix, az, to san diego, ca, is 360 miles. how many miles did each person drive? 3. solve the problem. what is the answer in total?

Anyone know these questions? i need ,.