Is x = 8 a solution to the equation 15 - x = 7?

The room above is shaped like a rectangle anthe room above is shaped like a rectangle and has a perimeter of 34 feet. if the room is 11 feet long, how wide is it?

The result of which expression will best estimate the actual product of (-4/5) x (3/5) x (-6/7) x (5/6) (i need an expression not an answer)

Astore sells a 28 oz. bottle of shampoo for $1.96. it also sells a 22oz. bottle of shampoo for $1.92 which bottle is the better deal?