Let D be the domain and let ƒ be the possible function. Determine if the relation is an example of a function. D = {x| x is a person’s social security number}
ƒ(x) = the person’s name

Yes. One input results in one output.

No. At least one input results in two outputs.

Yes. One output results in one input.

No. At least one output results in two inputs.

step-by-step explanation:

it's is b

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

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

happy to

pls mark as brainliest.