If you wish to have an item you ordered delivered quickly, you must pay extra for shipping, and the amount you pay depends on the weight w, in pounds, of the item.  The shipping cost S, in dollars, is given by  
.
You have $32.39 to spend on shipping costs.  How large an item can you have shipped?

A. 12.42 pounds
B. 21.41 pounds
C. 11.98 pounds
D. 11.31 pounds

Answer: D

Mathematics

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