What are the polar coordinates for the rectangular point (5,-5)? Please show work.

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

This is so hard and it’s for a test

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.