2. Find the value of x. Then, find the measure of each angle. * 1 point Captionless Image A. x = 20, m∠H = 62°, m∠I = 89°, m∠J = 69° B. x = 7, m∠H = 19°, m∠I = 19°, m∠J = 12° C. x = 20, m∠H = 58°, m∠I = 71°, m∠J = 51° D. x = 7, m∠H = 58°, m∠I = 71°, m∠J = 51°

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

step-by-step explanation: