Marco has a bag of red, blue, and green tiles. which set of events would be considered independent? a tile is drawn and replaced, and then a second tile is drawn. a tile is drawn and removed, and then a second tile is drawn. a red or blue or green tile is drawn. two tiles are drawn at the same time.

A tile is drawn and replaced, and then a second tile is drawn.

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