The diameter of a cylinder of a 350 cubic inch engine is 86.4 millimeters, with a tolerance of ±0.0025 millimeters. what is the minimum diameter of the cylinder? a. 86.403 mm b. 86.4025 mm c. 86.397 mm d. 86.3975 mm

b because it is xD i dont know how to explain

B. 86.4025

Step-by-step explanation:

I googled it. Idk how to explain it lol.

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