Super easy will give brainleist if done before 10 p. m. pls hurry. if u have time pls me on other questions you

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.

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2