Andre is making paper cranes to decorate for a party. He plans to make one large paper crane for a centerpiece and several smaller paper cranes to put around the table. It takes Andre 10 minutes to make the centerpiece and 3 minutes to make each small crane. He will only have 30 minutes to make the paper cranes once he gets home. Andre wrote the inequality 3x + 10 < 30 to plan his time. Describe what x, 3x, 10, and 30 represent in this inequality.