What does 3.872 and 2.409 round to the nearest one

In a column proof the right column states your reasons

Find the distance between the pair of points a(-1,8) and b(-8,4)

You work for a landscape company that just got a contract to re-mulch a park. the area that needs mulching is 30 feet by 60 feet. they want a 3 inch layer of much on the area. the company has bags of mulch that cover 2 cubic yards that cost $4.00 per bag. how much will it cost the consumer just in materials to re-mulch the area (round to the nearest dollar)?