Pls answer what is the rate of change for these tables answer in y over x form

1)

2)

3)

4)

Step-by-step explanation:

Given is four pair of coordinates.

We have to find rate of change for these.

'Rate of change' is nothing but slope that is calculated as,

1)

2)

3)

4)

Therefore these are the required form.

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