Rosalie buys her lunch three times a week at the deli near her office. She usually spends $7.50 for a sandwich, chips , and a drink. In order to save money , she decides to pack her lunch at home and bring it with her . She estimates that a sandwich will cost her $2.00, a bag of chips 75 cents and a can of soda 33 cents . Assuming that Rosalie works 48 weeks in a year: how much does Rosalie spend per week buying her lunch at the deli? (B) how much would it cost Rosalie to pack her lunch instead? (C) how much does Rosalie save each week by packing her lunch? (D) what are her saving for a year?