Asked by emma g
                the revenue from selling x units of a product is given by y=-0.0002x^2+60x. how many units must be sold in order to have the greatest revenue? 
I think I need to use this formula: -b/2a, but I'm not sure if I'm getting the right answer. please explain step by step.
thank you.
            
        I think I need to use this formula: -b/2a, but I'm not sure if I'm getting the right answer. please explain step by step.
thank you.
Answers
                    Answered by
            bobpursley
            
    -b/2a is when x gives the maximum y.
-60/(2*-.0002)= you do it.
    
-60/(2*-.0002)= you do it.
                    Answered by
            emma g
            
    thanks again!
    
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