The following questions refer to the crt technologies project selection example presented in this chapter. formulate a constraint to implement the conditions described in each of the following statements. a. out of projects 1, 2, 4, and 6, crt’s management wants to select exactly two projects. b. project 2 can be selected only if project 3 is selected and vice-versa. c. project 5 cannot be undertaken unless both projects 3 and 4 are also undertaken. d. if projects 2 and 4 are undertaken, then project 5 must also be undertaken

Answer

The answer and procedures of the exercise are attached in the following archives.

Step-by-step explanation:

You will find the procedures, formulas or necessary explanations in the archive attached below. If you have any question ask and I will aclare your doubts kindly.  

step-by-step explanation:

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c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.