Question 1104108
The demand curve is a parabola that curves downward, therefore the price (x axis) that maximizes the revenue is the x coordinate value for the parabola's vertex
:
q = 800 - 7p^2
:
x coordinate of the vertex is -b/2a = 0 / 2(-7) = 0
:
here is a graph of the demand curve
:
{{{ graph( 300, 200, -15, 15, -400, 950, 800 - 7x^2) }}} 
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