Create a pattern for the rule a x +2

Iwill make brain if you me correctly fill this out needs due today pls and send it back to me (click the link and you will get it)

Fredrick designed an experiment in which he spun a spinner 20 times and recorded the results of each spin

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.