Ahotel has 128 rooms on each floor. there are 4 floors in all. if 334 of the rooms in the hotel have been cleaned how many rooms stilll need to be cleaned?

Each of the walls of a room with square dimensions has been built with two pieces of sheetrock, a smaller one and a larger one. the length of all the smaller ones is the same and is stored in the variable small. similarly, the length of all the larger ones is the same and is stored in the variable large. write a single expression whose value is the total area of this room. do not use any method invocations.

Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?

X+ y = 5 ; x - y =3 solve using linear combination