Can u guys answer these 3 questions for me w/ work shown and also label the ones u guys did so i won’t get them mixed up

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

Liz is shipping a package to her friend.the maximum weight of a medium flat-rate box is 20 pounds,including the box which weighs 6 ounces.write and solve an inequality to describe the possible weight ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.

How many solutions does the nonlinear system of equations graphed bellow have?