I am not knowledgable in Excel and I am trying to figure out how to do
something.

I want some cells in a row to choose between 2 or 3 formulas based on
the value I enter for a certain cell in the same row.

For example: If I enter "A" in F9 it would use Formula A in X9, AC9,
etc. If I enter "B" in F9 it would use Formula B in X9, AC9, etc.

How would I do this? I am not even sure of the terminology of the
solution to research it. Variable, IF, ???????

Thanks.