the library at school is organized by fiction and non-fiction books. there are 3 non-fiction books how many total books are there if the library has 240 non-fiction books.

3; 9 is 8 to -4

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

answer: 193

explanation:

200-7 = 193

a

step-by-step explanation: