A machine that drills holes for wells drilled to a depth of – 72 feet in one day (24 hours).
How much did the depth change each hour?
Make sure to show whether the change is positive or
negative.
|
feet per
hour
Submit

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

1 + (6 / x - 1)

step-by-step explanation:

divide using polynomial division.

4

step-by-step explanation: