Problem 1: Which of the following statements are true for f(x) = -3x2 + 2x + 5?
a. f(x) is a concave function
b. f(x) c. f(x) >/= 2 is a convex set
d. a and b
Problem 2. In the basic EOQ model, if D = 55 per month, S = $10, and H = $7 per unit per month, what is the EOQ?
a. 10.5
b. 11.5
c. 12.5
d. 13.5
Problem 3. Given that annual demand equals 1000 units, Co = $300 per order and Cc = $3 per unit, how many days are between orders in the classical EOQ model?
a. 105
b. 110
c. 115
d. 120
Problem 4. If the demand rate and lead time are constant, then the ___________will have a _________ that will be made at specified
time intervals, which is the same as the __________ under similar conditions.
a. fixed-order / fixed-period model / fixed-quantity model
b. fixed-period model / fixed quantity model / fixed-order quantity
c. fixed-quantity model / fixed-order quantity / fixed-period model
d. fixed-period model / fixed-order quantity / fixed quantity model
Problem 5. If the demand rate and lead time are constant, then the fixed-period model will have a fixed-order quantity that will be made at specified time intervals, which is the same as the fixed-quantity model under _________conditions.
a. different
b. similar
c. constant
d. all of the above