Final answer:
A mathematical equation is an example of a model and a scientific law, as it can describe phenomena in nature using mathematical concepts and represent concise, universal patterns supported by evidence.
Step-by-step explanation:
A mathematical equation can act as a model, which is a description of a phenomenon using mathematical concepts such as equations and inequalities. In the context of science, a mathematical equation can also represent a scientific law, which is often a concise expression used to describe a generalized pattern in nature. Scientific laws can be written in the form of mathematical equations, such as Newton's second law of motion (F = ma), and are meant to be universal and supported by a significant amount of scientific evidence and repeated experiments.
However, a mathematical equation on its own is not a scientific theory, which is usually a more complex explanation of phenomena. Therefore, a mathematical equation can be considered both a model and a scientific law, making the answer 'More than one of these'.