question to the water level of a lake has been increasing each year then title of water level of the lake was 800m in the water level increases by 1 and each year use this information to answer the question below since the water level increases by 1 m each year the increase in the water level at the same as a numbers of years write an equation relating final water level (w) to the time in years (t) ​

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answer: the answer is ann

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