Johann and Marta shopped at a vintage toy store. Johann bought 3 blue marbles and 5 green marbles and paid $11. Marta bought 4 blue marbles and 2 green marbles and paid $10. Which system of equations can be used to find the prices of the blue and green marbles? Group of answer choices

3 x + 5 y = 10. 4 x + 2 y = 11.

3 x + 5 y = 11. 4 x + 2 y = 10.

5 x + 3 y = 10. 4 x + 2 y = 11.

5 x + 3 y = 11. 4 x + 2 y = 10.

boxplot

the answer would be 484

step-by-step explanation:

just multiply 0.484 times 1,000 (formula)

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