Assume the following sets: U = {1, 2, 3, 4, 5, 6, 7, 8, 9]
A = {3, 4, 5, 6}
B = {2, 4, 6, 8}
C = {1, 3, 5, 7}
What are the elements of B n (AU C)"? Check all that apply.

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204

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step-by-step explanation:

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