Awoodworking artist makes two types of carvings: type x and type y. he spends 3 hours making each type x carving and 2 hours making each type y carving, and he can spend up to 36 hours each week making carvings. his materials cost him $4 for each type x carving and $5 for each type y carving, and he must keep his weekly cost for materials to $100 or less. if x is the number of type x carvings he makes in a week and y is the number of type y carvings he makes in a week, which of the following systems of inequalities models this situation?

Acaterer knows he will need 60, 50, 80, 40 and 50 dinner napkins on five successive evenings. he can purchase new napkins initially at 25 cents each, after which he can have dirty napkins laundered by a fast one-day laundry service (i.e., dirty napkins given at the end of the day will be ready for use the following day) at 15 cents each, or by a slow two-day service at 8 cents each or both. the caterer wants to know how many napkins he should purchase initially and how many dirty napkins should be laundered by fast and slow service on each of the days in order to minimize his total costs. formulate the caterer’s problem as a linear program as follows (you must state any assumptions you make): a. define all variables clearly. how many are there? b. write out the constraints that must be satisfied, briefly explaining each. (do not simplify.) write out the objective function to be minimized. (do not simplify.)