Finding definite integral: I'm not sure how to find part a in the screenshot.

And I don't know how to find absolute values for part b:
(b) Given that f(4)=10 , write an expression for f(x) that involves an integral. Use this expression to find the absolute minimum value of f and the absolute maximum value of f on the closed interval 0≤x≤7 . Justify your answers.

bull

step-by-step explanation:

898.1666667

step-by-step explanation:

5389/6 = 898.1666667

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