Can anyone please help me I know it’s right I don’t know why it’s staying it’s wrong

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 is the slope of the line that contains the points (-5, 6) and (14. - 7)?

I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i