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Read the following SAT test question and then click on a button to select your answer.
A manager estimates that if the company charges 
dollars for their new product, where 
, then the revenue from the product will be 
dollars each week. According to this model, for which of the following values of 
would the company’s weekly revenue for the product be the greatest?
A. 10
B. 20
C. 50
D. 100
E. 200
