Hope plans to swim 12 laps in the pool each lap is 50 meters she has already swam 144 meters what percentage has she already swim

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.

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.