🧮 Build Candidate Model Equations

Students use their own data to generate at least two candidate equations, such as exponential versus linear or exponential versus logarithmic, with calculator, Desmos regression, or logarithmic linearization as appropriate. They label parameters in context, test at least one value of interest, and record how exponential and logarithmic forms connect when solving for unknowns. The output is a portfolio page with equations, a graph, a table snippet, and a brief note on why each candidate is plausible.