Destiny works on commission as an office supply saleswoman. she sold a computer that cost $700 and received a $126 commission. what percent of her sale is destiny's commission?

What is the solution to the system of the equations? x = y - 3 x + 3y = 13

Answer question above and explain each step : )

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.