Solve for x 3x+2=2x-7

x = - 9

Step-by-step explanation:

Given

3x + 2 = 2x - 7 ( subtract 2x from both sides )

x + 2 = - 7 ( subtract 2 from both sides )

x = - 9

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