17+6p=9 liner equation

If lmn=xyz, which congruences are true by cpctc? check all that apply

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 table above shows approximate conversions from gallons to liters. what is the value of x?