1. (5%) Suppose that the relationship between the tax rate t on imported shoes and the total sales S (in millions of dollars) is given by
. Find the tax rate t that maximizes revenue for the government.
(A)3.6%
(B) 6.4%
(C) 9.2%
(D) None of the above
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統計: 尚無統計資料
統計: 尚無統計資料