A tablet screen has an area of A square inches. The width of the tablet screen is 9.5 inches. Which equation represents x, the length of the
tablet screen in inches?

answer: i believe c. is the answer sorry if i am wrong

step-by-step explanation:

cant open file sorry!

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