6. Ten-year-old Kayla's lemonade stand has experienced rises and falls in sales caused by temperature changes over the last few summers. Her sales over the first two weeks of summer were tracked according to the model S(x) = x³ − 12x² + 36x, where x is the number of days and S(x) is the number of sales. a) Kayla makes a profit if she sells at least 10 glasses of lemonade. Use the model to determine the number of days that she made a profit. b) What are the domain and range? (2.6 11)

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