Alex has saved $30 and he earns $12 per hour. He wants to have at least $150 in his savings account. How many hours can he work?

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.