Three consecutive odd integers whose sum is at least eighty one

Mr switzer needs to buy new 1-foot tiles to cover his bathroom floor. the floor is 12 feet long and 8 feet wide. each square foot of tile will cost $1.79. in dollars what will be the total cost of the tiles he needs to buy.

Ineed if you could explain and give me the answer you! this needs done

Through non-collinear points there is exactly one plane.