Hey!! Can you also help me with this thank you−3(2y − 9) − (5y + 4)

Let's simplify step-by-step.

3(2y−9)−(5y+4)

Distribute the Negative Sign:

=3(2y−9)+−1(5y+4)

=3(2y−9)+−1(5y)+(−1)(4)

=3(2y−9)+−5y+−4

Distribute:

=(3)(2y)+(3)(−9)+−5y+−4

=6y+−27+−5y+−4

Combine Like Terms:

=6y+−27+−5y+−4

=(6y+−5y)+(−27+−4)

=y+−31

=y−31

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