Step 4: Is the function increasing or decreasing? Why? -It is increasing because the graph line points down and right and has a positive slope.
-It is decreasing because the graph line points down and right and has a negative slope.
-It is decreasing because the graph line points up and right and has a negative slope.
-The function is neither increasing nor decreasing.
-It is increasing because the graph line points up and right and has a positive slope.

I think it’s the second answer

Not sure if I’m right it’s what I got.

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

i think it will be zero as slope has a formula of difference between initial and final distance divided by itz time interval