What is h (x) if h (x) = g (x) - f(x)​

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm