Princeton Middle School is having a math competition. Four students are called to the stand to answer a question. The question is: 58.483 – 12.418 Based on the answer choices, which student was correct? Taylor: 46.565 John: 46.085 Kate: 46.135 Alex: 46.065

Alex: 46.065

Step-by-step explanation:

58.483 - 12.418 = 46.065

-14 is the answer

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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