Is there a way to do this? I want to write a question like the one below, using a formula, so each student gets a slightly different model. Rather than do it like it's written below (where the model is in terms of the parameters A, B and k, and then each student is given their parameter values), I would prefer that I could just put the variable-based model in the question. I hope my question makes sense. Is there a way to do this? As far as I can tell, I can't use the variable placeholder in conjunction with the equation editor.