Substitute the ordered pair (5, 3) into the linear equation 2x - 5y = -5 to prove whether it is a solution to the equation.

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.