You and a friend sign up for a health club. it costs $50 to join, plus $20 a month. however, the first 100 customers can sign up for $30, plus $20 a month. your friend is customer 100, and you are 101. if the accumulated cost for each membership were graphed, what would it look like? what would the difference be between your accumulated cost and your friends accumulated cost at any given month?

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.