This needs to be written as a addition expression that represents the final elevation. please no links, please explain it all out to me!

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.

What properties allow transformation to be used as a problem solving tool

What is the range for 31,39,29,34,37,24,36,33,34,28