Help i dont understand

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

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.

One integer is 5 more than another. their product is 104. find the integers