Multiply the polynomials. (4x2 + 4x + 6)(7x + 5) a. 28x3 + 8x2 + 22x – 30 b. 28x3 + 8x2 + 22x + 30 c. 28x3 + 48x2 + 62x + 30 d. 28x3 – 40x2 + 70x + 30

probability for j is 1/4

while

a is 1/6

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