Which interval for the graphed function contains the local
maximum?
[-1, 0]
[1, 2]
[2, 3]
[3,4

john earns $14.00 for two hours of work.

step-by-step explanation:

hjkj

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

ok thats very interesting