Hi, Kelcy. Welcome!
Please show what ideas you have for solving, or even just for interpreting this. A problem like this can be solved in different ways depending on what you have learned, so we need to see, for example, whether you can handle a little algebra, or would like a visual approach, or what.
Since you put this under Beginning Algebra, we still have the question whether you can handle two variables, or need only one. (I personally wouldn't use algebra at all.)