In a week, a given stock gained 6 points, dropped 13 points, dropped 3 points, gained 15 points, and dropped 10 points. what was the net change in the stock's worth?

6 - 13 - 3 + 15 - 10 = -5

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

the answer is 13/48

step-by-step explanation: