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Maximize 2x + 3y subject to x ≥ 0, y ≥ 0, x + y ≤ 4. What is the maximum value?

A8
B10
C12
D7
Answer & Solution
Correct answer: C. 12
The corner points are (0,0), (4,0) and (0,4), giving 0, 8 and 12, so the maximum is 12.
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