A stop sign, that has the shape of a regular octagon, has equal side lengths of 9 inches.
Determine the area of the stop sign.

Step-by-step explanation:

391.1

Step-by-step explanation:

Just put the answer.

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(a) the volume of the cone is 20/3 in3

hence, option a is correct.

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