Factor the expression: 4d - 4
How do u do this plz help

4(d - 1)

Step-by-step explanation:

both terms in 4d - 4 have a common factor: 4. pull this 4 out of both factors in order to get 4(d - 1)

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

493 would be the correct answer

step-by-step explanation: