There are 4 books on a shelf. In the modal the shaded represent non-fiction books. which expressions represents the fractions of the books that are on the shelf that are nonfiction?(3 out of 4 books shaded)

answer: i forgot

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

step-by-step explanation:

a'(12.5,11.25)

slope=(y1-y2)/(x1-x2)