The furkids club is having a bake sale and wants to raise $150. they are selling
items for $2 each, but they spent $40 in baking supplies which allowed them to bake
just enough to meet their goal. the function, b(x) = 2.0 - 40represents how
much money, b, they've earned after selling a certain amount of baked goods, x.
what is the domain in the context of the problem? why?