Which of the following shows the set of all values of x for which the rational expressions x^3-4x over x^2+2x+1 is zero?

73.0769230769% of the games were won

b.-4 units

all you   do is count how many times you move

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 graph line crosses the x axis at both -6 and -2, so the answer would be the second one.