Analyse the equation: x² - 4y²+2x+8y-7=0
stating the vertex, foci and the asymtotes

Vertex=(1,1),(-3,1)

Foci=(-1+\sqrt(5),1),(-1-\sqrt(5),1)

Asymtotes=y=(x/2)+(3/2),y=(-x/2)+(1/2)

77

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