The ordering and transportation cost C for the components used in manu

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The ordering and transportation cost C for the components used in manufacturing a product is C = 120(240 x2 + x x+50), x ≥ 1 where C is measured in thousands of dollars and x is the order size in hundreds. Find the rate of change of C with respect to x for x = 21. Round your answer to two decimal places. 3.13 thousand dollars per hundred 7.41 thousand dollars per hundred -8.02 thousand dollars per hundred -5.03 thousand dollars per hundred -6.20 thousand dollars per hundred

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The ordering and transportation cost

C

for the components used in manufacturing a product is

C = 120 (\frac{240}{x^{2}} + \frac{x}{x + 50}), x \geq 1

where

C

is measured in thousands of dollars and

x

is the order size in hundreds. Find the rate of change of

C

with respect to

x

for

x = 21

. Round your answer to two decimal places. 3.13 thousand dollars per hundred 7.41 thousand dollars per hundred -8.02 thousand dollars per hundred -5.03 thousand dollars per hundred -6.20 thousand dollars per hundred