Solve the problem. Assume that relative maximum and minimum values are absolute maximum and minimum values.Suppose that the labor cost for a building is approximated by C(x, y) = 10x2 + 6y2 - 200x - 360y + 14,000, where x is the number of days of skilled labor and y is the number of days of semiskilled labor required. Find the x and y that minimize cost C.
A. x = 10, y = 30
B. x = 30, y = 36
C. x = 36, y = 90
D. x = 20, y = 60
Answer: A
Mathematics
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