Ineed with this solve for x: (-5/4) x-5= -35 (it's negative 5 over 4). a. 23 b. 24 c. -23 d. -24

42.4

step-by-step explanation:

convert to decimal

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