At the beginning of the season, a golf coach buys 118 sleeves of golf balls. Each sleeve costs $8. Which best explains if it is better to overestimate or underestimate the amount of money the coach needs to buy the golf balls?
A. It is better to overestimate to make sure the coach has enough money to buy the golf balls.
B. It is better to overestimate so the coach can buy more golf balls than he originally plans.
C. It is better to underestimate so the coach knows exactly how much money he needs to buy the golf balls
D. It is better to underestimate to make sure the coach dose not spend more money than he wants to on golf balls

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.)