The united states capitol is located 800 meters south and 2300 m to the east of the white house. if the locations were placed on a coordinate grid the white house would be at the origin. what is the distance between the capital and the white house?

Mary and roberto bought identical backpacks at different stores. mary's backpack originally cost $65 and was discounted 25%. roberto's backpack originally cost $75 and was on sale for 30% off on the original price. which backpack was the better buy?