Write an example of an algebraic expressions that always has the same value regardless of the value of the variable. need with hw

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

The graph of y x3 is translated so that the point (1. 1) is moved to (1, 4). what is the equation of the new graph?

Find the volume of the wedge cut from the first octant by the cylinder z=12-3y^2 and the plane x+y=2.