i found the vertex and the x intercept but i just need help with the second part
second part of the equation
sorry gotta go right now
the x-intercepts are where f(x) = 0 i.e. where the profit is zero. it is where they break even
what about the vertex
The vertex of a parabola that opens down, is the maximum point of the parabola. In this case, the maximum point is the maximum daily possible profit. the vertex in a form of (h,k): k - the maximum possible daily profit h - how many combos do you have to sell to reach this max. profit.
the vertex can be found by completing the square.
in other words the y-value of the vertex - the maximum possible daily profit the x-value of the vertex - how many combos do you have to sell to reach this max. profit.
I am probably going to be gone right now, but I will do my best to be on track with you here.