anvas X X D D Question 7 2 pts Fixed cost is the difference between total cost and total variable cost. o Fare D Question 8 2 pts The modeling techniques that we focus on for solving our management Science problems are model construction and problem solution True Question 9 2 pts Whendetining anche unction and a constraint for particular problem. the decisions variables are represented by numbers - + 8 PE 6 GP 2 o A 1x 7 8 mw 0 0 W R Y U O P A S D F G H J 3 3 N c