Correct answers only ! multiply. (3x + 2)(4x - 7)

12x^2 - 13x - 14

Choice D

Work Shown:

Let y = (3x+2)

Replace (3x+2) with y and we go from (3x+2)(4x-7) to y(4x-7)

Distribute this y through: y(4x-7) = 4xy - 7y

Now replace y with (3x+2), distribute again, and simplify

4xy - 7y

4x(3x+2) - 7(3x+2)

4x(3x)+4x(2) - 7(3x) - 7(2)

12x^2 + 8x - 21x - 14

12x^2 - 13x - 14

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

answer: 180 degrees clockwise

step-by-step explanation: