How do variables help you model real-world situations?

Question

hartnn · Answer

$\huge \color{red}{\text{Welcome to Open Study}}\ddot\smile$

hba · Answer

Some of the following things are:

1)Demand curve

2)Currency exchange rates

3)Interest

4)Investments

anonymous · Answer

Cool question, actually. hba will answer this well, so I'll give an example. For my pay type I get $120 a week. If I want to know how much I will have saved total, then I'll graph y = 120x. I can see that I'll make $480 in 4 weeks. The coordinate pair will be (4, 480)

anonymous · Answer

how much I will have saved total after a given amount of weeks**

anonymous · Answer

wouldnt that depend on how many weeks are in the equation?

anonymous · Answer

actually never mind you actually gave me an answer with your problem so thanks

anonymous · Answer

Well check this out. I want to save $2500 for my plane ticket from Australia to the US this summer. Making $120 a week, I could figure out how many weeks I need to work before I could go. Like so 120x = 2500 which equals 20.83 weeks.