A grocery store offers a cheese sampler that includes a pepper cheddar cheese that costs $14 per kilogram and Pennsylvania Jack that costs $10 per kilogram. How many kilograms of each were used to make a 5-kilogram mixture that costs $11.20 per kilogram?

c

step-by-step explanation:

because of the levels

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

step-by-step explanation: