Can anyone me with this math problem

B.)

Step-by-step explanation:

In step #1 they did the distributive property

2/5 × 15x = 6x

2/5 × -30y = -12y

The new equation would be:

6x - 12y + 10x

Further Explanation

They then combined 6x + 10x to get 16x

16x - 12y

They then factored it out to 4(4x - 3y)

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