Best answer gets
which transformation represents a reflection over the y-axis?

(x, y) → (−x, y)
(x, y) → (x , −y)
(x, y) → (y, x)
(x, y) → (−y, x)

you cant answer this dummy

step-by-step explanation:

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

the answer is 8/21

hope this