Kelly and Zach are selling cookies at a bake sale. The ingredients for the cookies cost $25, and they are selling the cookies for $2 each. If profit is modeled as a function, what is the domain of this function?
{-10, 10} {-99, -98, … , 1, 2, 3}
{0, 1, 2, 3, 4 …} {… , 1, 2, 3, 4 … }

Question

Kelly and Zach are selling cookies at a bake sale. The ingredients for the cookies cost $25, and they are selling the cookies for $2 each. If profit is modeled as a function, what is the domain of this function?
	{-10, 10}		{-99, -98, … , 1, 2, 3}
	{0, 1, 2, 3, 4 …}		{… , 1, 2, 3, 4 … }

anonymous · Answer

wow r u the only one who didn't give up on this question? lol

anonymous · Answer

Are the sets in your question options? :)

anonymous · Answer

haha yeah

anonymous · Answer

Oh ok :) Well domain is the set of values we input into the function right? So what are the sort of things we'd be putting into the function? :)

anonymous · Answer

i dont understand how to solve these types of problems and i have another one just like this one. I'm in trouble... lol and variables.

anonymous · Answer

Well think of a function as like a machine. We put things we have already in and it puts out stuff we want :) Here we want to know the profit so we design a machine to tell us what the profit is based on how much we spend and how much we earn :) So tell me what information we have to put into the function :)

anonymous · Answer

oh lol
no i wasnt looking
just OS was open in background

anonymous · Answer

huh? aajugdar

anonymous · Answer

about the give up thing

anonymous · Answer

as he says
build the function

anonymous · Answer

2$ and x for the profit modeled as a function f(x)...

anonymous · Answer

oh lol ok.

anonymous · Answer

So now you've had a think about what sort of stuff would go into the function. Which out of the options do you think is most likely to go be the right one? :P

anonymous · Answer

uhmmmmmm... tbh i have no clue.

anonymous · Answer

Well to find the profit. Were going to put in the ingredients cost, the amount sold and the cost right? So are any of them negative numbers? :P

anonymous · Answer

no.

anonymous · Answer

Theyre not negative on theyre own. But in terms of each other they are. If were trying to find profit, then is the cost of stuff we have to buy going to be a positive? :P

anonymous · Answer

yasssss, and this was my original answer....  {… , 1, 2, 3, 4 … } am i right?

anonymous · Answer

Well there cant be a zero in it... ;)

anonymous · Answer

theres not. lol wait, what? this blonde right here is soo confused o.O

anonymous · Answer

In terms of profit... Buying ingredients is really like taking a minus out of our profit right?

anonymous · Answer

yes

anonymous · Answer

so i was right.

anonymous · Answer

Meh... If were putting a minus into our machine then its part of our domain right?

anonymous · Answer

ok ok ok, lets do another problem let me close this. cause this is just confusing me to death.