Oct 30th 2012, 23:08:52
So, I'm trying to help someone with some highschool math, and i've got a question that's just gone over my head. Could someone give me a hand with this?
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)= x^3 - 12x^2 + 36x
Where "x" is the number of days and "S(x)" is the number of sales. She makes a profit when she sells at least 10 glasses of lemonade. Determine the number of days that she made a profit.
Much appreciated.
-Fooglmog
Guy with no clue.
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)= x^3 - 12x^2 + 36x
Where "x" is the number of days and "S(x)" is the number of sales. She makes a profit when she sells at least 10 glasses of lemonade. Determine the number of days that she made a profit.
Much appreciated.
-Fooglmog
Guy with no clue.