Luis, marissa, and federico are raising money for a school trip. luis has raised 6/7 of the total amount needed, marissa has raised 5/9 of the total amount needed, and federico has raised 11/10 of the total amount needed. who has raised the most money

 Federico

Step-by-step explanation:

Hi, to answer this question we have to convert the fraction values into decimals and compare.

Luis = 6/7 = 6÷7 =0.85

Marissa = 5/9= 5 ÷ 9= 0.55

Federico = 11/10= 11÷10 = 1.1

Comparing the values, Federico raised the most money.

Federico (1.1) > Luis (0.85) > Marissa (0.55)

Feel free to ask for more if needed or if you did not understand something.

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