Two sides of an equilateral triangle have lengths 2x - 2 and 3x – 4. Which could be the length of the third side: 4 - x or 6x - 5?
A. 4- x only
C. 6x - 5 only
B. both 4-x and 6x - 5
D. neither 4 - x nor 6x - 5

the answer is A

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

what is the answer to this