Simplify the expression. 2(3x+x)

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.

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days

Reagan lives five miles farther from school than vanessa lives. write an expression to describe how far reagan lives from school