On the basis of past experience, a company has determined that its sales revenue (in dollars) is related to its advertising according to the formula 
, where x is the amount spent on radio advertising and y is the amount spent on television advertising. If the company plans to spend $30,000 on these two means of advertising, how much should it spend on each method to maximize its sales revenue?
?
A. $8,401.47 on radio; $21,598.53 on television
B. $10,801.89 on radio; $19,198.11 on television
C. $12,002.10 on radio; $17,997.90 on television
D. $14,402.52 on radio; $15,597.48 on television
E. $15,602.73 on radio; $14,397.27 on television
Answer: C
Mathematics
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