Correct answer gets brainliest! : )

all you have to do is add them all up

4x + 3x + 2x = 9x and since everything is subtracting you add the subtraction sign to it then you add the last 2 numbers at the end witch is 3 so the answer would be 9x - 3 witch is D

The only correct answer is "D" 9X-3.

linear

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