Which graph shows the strongest association between the hours spent studying and the test scores? Math Scores vs. Hours Spent Studying
Science Scores vs. Hours Spent Studying
Spelling Scores vs. Hours Spent Studying
History Scores vs. Hours Spent Studying

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step-by-step explanation:

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

pls refer ro the top for answer

step by step explanation: when u removing the parentheses and combined them that would be : x+3y-x-y=2y