Mia is factoring the polynomial x2 + 4x – 12. she uses the steps shown. x^2+4x-12 step 1- x^2 + 6x - 2x - 12 step 2- (x^2 + 6x) - (2x - 12) step 3- x(x + 6) -2 (x+6) step 4- (x + 6) (x+2) in which step did mia make an error? a. step 1 b. step 2 c. step 3 d. step 4

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

the cost of the pair of pants is $31.95