Which statement and reason accurately complete the proof

Write a corresponding real world problem to represent 2x - 125=400

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.

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package