8. (05.06 LC) What is the graph of the function f(x) = -X² + x + 20 ? (6 points) X + 4 у 8 7 5 3 (-4, 1 2. Х -9-8-7-7-5-4-3-2-1 1 2 3 4 -3 HY

d) 48

step-by-step explanation:

16,32,48,64,80,96,112,128,144,160,176,192,208,224,240,256,272,288,304,320,336

here is the

mark brainliest pl

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