A container must contain at least 40 pounds of potatoes and at least 20 pounds of onions. The combined amounts of potatoes and onions must be at least 80 pounds but must not exceed 160 pounds.
Let x represent the number of pounds of potatoes and y represent the number of pounds of onions.
Which system of inequalities can be used to find the values of x and y?
ОА.
(x 2 40
y2 20
x + y s 80
(x + y 2 160
(x s 40
y s 20
x + y s 80
(x + y 2 160
Ов.
(x240
y2 20
x + y 2 80
(x + y s 160
OD.
(x s 40
y s 20
|x + y 2 80
(x + y s 160

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

easy its decreasing

step-by-step explanation:

because its top point is at the to of the graph on the left side (atleast from the veiw i see it) now if that top point wast in the lower part of the graph it would be increasing hope this have a nice day

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