Hey I need some help

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?

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30

You have a square piece of cardboard that measures 14 inches on each side. to build a box, you cut congruent squares out of each corner of the cardboard. use the picture to find the area of the cardboard you were used to build the box