Combining like terms with negative coefficients
3y-6x-7y-9x-4xy-3x-2xy

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.

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

Suppose a pendulum is l meters long. the time,t,in seconds that it tales to swing back and forth once is given by t=2.01