L u i s O's the school cafeteria $10 which means that he was a negative 10 violence on his lunch account which situation illustrates the idea of a number and its opposite a l u i s mom deposit $50 in l u i s lunch account so l u i s has a $40 balance on his lunch account b l u i s stands for dollars more dollars on lunch without depositing money into his lunch account see l u i s on deposit $10 in l u i s lunch account so l u i s has a zero bonus on his lunch account d l u i s skips lunch because he does not want to go further into debt

B. Luis owes money on his lunch account but then receives a deposit from his mom, resulting in a positive balance. This situation illustrates the idea of a number and its opposite.