Evaluate z+z + z for x=2, y=-3, z = - 4.

a. - 6

b. - 12

c. 12

d. - 9

b.-12

Step-by-step explanation:

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Answer: - 12

Explanation: In this problem we're going to evaluate z + z + z knowing that z = - 4.

All we have to do is substitute - 4 into out problem.

So we have - 4 + - 4 + - 4 which simplifies to - 12.

So our answer is - 12.