The bridge to cross the Neches River between Evadale and Silsbee is a toll bridge. It cost cars $3 to cross and trucks $5 to cross. Last Saturday a total of 76 cars and trucks crossed the bridge and the total tolls charged was $276. How many trucks crossed the bridge?

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.