What is the distance between the points M(–21, –7) and N(–5, –7)? 28 units
14 units
26 units
16 units

Which of the following questions is a statistical question? (2 points) how many professional sport leagues are there? where do the professional sport leagues play? how many hours of professional training took place over the weekend? how many hours do you spend each week training for a sports league?

The train station clock runs too fast and gains 5 minutes every 10 days. how many minutes and seconds will it have gained at the end of 9 days?

Just tell me how to set up the equation.