Which of the following is a good constraint to model the fact that activity A is an immediate predecessor of activity B? A B YB ≥ 5 -A+B+B ≤5 -A+B+B ≥ 5 A+B+B 5 None of the above. Question 6 BONUS Which of the following is a good constraint to model the fact that activity D is an immediate predecessor of activity F? UP ≤1 -xD+F+YF ≥ 3 -D+p+UP > 4 None of the above. Project Management Homework-Project Crashing Use the following scenario and data to answer all related questions. A community neighborhood association decided to add a swimming pool to the community activity center. The project is divided into the activities listed in the following table. The activity times and costs, both normal and crashed, are given. To finish the project before the summer season starts, the neighborhood has to make time and cost tradeoffs. If the project needs to be finished in 20 weeks, you are required to formulate a linear programming model to decide about how much to crash for each activity. Activity Immediate Predecesso Normal Gs) Cost (5) Cost (5) Crashed Normal Crashed A 4 2 800 1400 B A 5 2 3000 4200 C 6 4 2500 2800 D A, C 7 5 1600 2200 E B, C 5 2 1200 2100 F D 4 3 1300 2100 G E, F 5 3 8200 9000 To answer the following questions, you may want to use the last column of the following table to compute the cost of crashing an activity by one week. Immediate Activity Predecesso Normal rs) Crashed Cost (5) Cost (5) Cost/Week Normal Crashed A 4 2 BOO 1400 B A 5 2 3000 4200 CDEFG 6 4 2500 2800 A, C 7 5 1600 2200 B, C 5 2 1200 2100 D 4 3 1300 2100 E, F 5 3 8200 9000

find the a. decision variables b. objective function c. constraints

pls answer the 2nd question: The Montemar Company is considering contracting with a market research firm to do a survey to determine future market conditions.  The results of the survey will indicate either positive or negative market conditions.  There is a 0.60 probability of a positive report, given favorable conditions; a 0.30 probability of a positive report, given stable conditions; and 0.10 probability of a positive report; given unfavorable conditions.  There is a 0.90 probability of negative report, given unfavorable conditions; a 0.70 probability given stable conditions; and a 0.40 probability, given favorable conditions. d & e, as per the guidelines

Variable cells Cell Name Final Value Reduced Cost Objective Coefficient Allowable Increase Allowable Decrease $B$6 Activity 1 3 0 30 23 17 $C$6 Activity 2 6 0 40 50 10 $D$6 Activity 3 0 –7 20 7 1E+30 Constraints Cell Name Final Value Shadow Price Constraint R.H. Side Allowable Increase Allowable Decrease $E$2 Resource A 20 7.78 20 10 12.5 $E$3 Resource B 30 6 30 50 10 $E$4 Resource C 18 0 40 1E+30 22 What is the allowable range for the right-hand-side for Resource C?   Multiple Choice   18 ≤ RHSc ≤ ∞   ∞ ≤ RHSc ≤ 62   −2 ≤RHSc ≤ ∞   − ∞ ≤ RHSc ≤ 40   0 ≤ RHSc ≤ 22

L.P. Model: Minimize Subject to: Z = 15X+12Y 7X+11Y288 (C₂) (C₂) 16X+4Y280 X,Y 20 On the graph on right, constraints, C, and C₂ have been drawn. Using the point drawing tool, plot all the corner points for the feasible area. 24- 22- 20- 18- 16- 14- 12- 10 8- 64 4- 2- -N 10 12 14 16 18 20 22 24 X C G

Pls solve this question correctly in 5 min i will give u like Question # 2 A company produces two products, A and B. The sales volume for product A is at least 40% of the total sales of the two products. Both products use the same raw material, of which the daily availability is limited to 200 kg. Products A and B use this raw material at the rates of 5 kg/unit and 2 kg/unit, respectively. The sales prices for the two products are $50 and $20 per unit. Determine the following: a)Optimum volume of each product to be produced? b)What impact does the production mix have, in case the sales price of Product B decreases by 50%?

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Discuss in brief slack variables?

Kathy receives her real estate license. Within a month of receiving her license, she gets a new job offer she can't refuse. She decides to continue to hold her license but not practice, do any real estate work, or collect any referrals at this time. She is willing to renew her license, do her continuing education, and pay the renewal fee for her license. What should Kathy do? ○ Opt not, renew her license or complete the educational requirements ○ Seek a voluntary inactive license. Seek an involuntary inactive license. Seek a broker who will not be upset if she does not work too hard.

Quorex is evaluating two mutually exclusive projects. Project A has a net investment of $50,000 and net cash flows over a six-year period of $13,000 per year (NOTE: that project requires a reinvestment with the same cost and cash flow for another six years). Project B has a net investment of $48,500, but its net cash flows of $8,740 per year will occur over a 12-year period. If Quorex has a cost of capital of 14% for these projects, which project, if either, should be chosen, and what is its NPV?