F(x) = 1 + 9. Find f'(x) and its domain. A. F-1(x) = x2 – 9;x29
O B. f-1(x) = x2-9;x20
O c. f-1 (2) = (x - 9)?x29
O D. f-'(x) = (x - 9)?:x20

4/6 = 2/3

so it should take 3/3 hours per man. so 9 hours is the answer 3*3 =9

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