Solve for x. I just can't seem to find the answer so i am coming to for help

Apath 3 m wide runs around the inside of a square park inside 60 m. find the area of the path. pls

Three coins are flipped. what is the probability that there will be at least two tails?

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?