The teacher predicted that 15 tables would be enough to seat all the students, but in reality 22 tables was needed. What is the percent error?

Which expression is equivalent to 5r6141 2r+st6

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.

Someone me what is the area of this figure? 18m 18m 8m 16m