Solve the problem.The cost in millions of dollars for a company to manufacture x thousand automobiles is given by the function C(x) = 4x2 - 32x + 128. Find the number of automobiles that must be produced to minimize the cost.

A. 4 thousand automobiles
B. 64 thousand automobiles
C. 8 thousand automobiles
D. 16 thousand automobiles

Answer: A

Mathematics

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A. (r - 5)(s + 4) B. r(s - 4) + 5 C. (r + 5)(s - 4) D. 5r(s - 4)

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