Question: 21. Given the cost function C(x) = 2x2 + 400, and dx at = 50 when x = 10, find ac dt a) 500 b)

21. Given the cost function C(x) = 2x2 + 400, and

dx at = 50 when x = 10, find ac dt a)

21. Given the cost function C(x) = 2x2 + 400, and dx at = 50 when x = 10, find ac dt a) 500 b) 600 c) 200 d) 2000 e) None of the above

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