Please help answer 2 and 3 the best you possibly can

Below.

Step-by-step explanation:

(2).   6x + 51 + 111 = 180

        6x = 180 - 162 = 18

         x = 3.

(3).   6x = 30

        x = 5.

answer: 1 + 1 = 11

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