How do you use an equation to model and solve a real world problem?

2 answers

I can use what I already know about writing algebraic expressions to write an equation that represents a real world situation... this is all I know. Can anyone help me?
surely your text has word problems. Most of them are "real-world" problems.

You say you can use what you know. That is all they are asking you to do. Write the equation. It models the real-world problem. Solving the equation may not solve the problem, but it does provide insight.