What is the distance between point r (−1, 7)(−1, 7) and point t (−7, 7)(−7, 7) ? 1 units 6 units 7 units 8 units

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

17

step-by-step explanation:

51/3=17

thus 17 is your answer.