Are 4x, 4y, and 4xy like terms?

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.

Which expression converts 45 degree to radians

Factor the expression using gcf 9b+45